UK Public Sector Contracts & Tenders

Kilnbridge have secured the HS2 Old Oak Common Station Works Package WP13.1-Urban Realm Civils, Utilities and Earthworks. Part of this scope requires the installation of permanent sheet piles, extraction of existing sheet piles, installation and extraction of temporary works sheet piles. There is an interface with Transport for London (TfL) assets on the Northern boundary and the subcontractor will be working under a controlled working environment (ALO) and in the case of the permanent piles within Tfl land. The extraction of the existing sheet piles are within the HS2 OOC site and interfaces with overhead lines to the East and fall within the rail interface zone. Experience of working in the rail environment and a proven ability to develop methodology collaboratively around this key interface, produce works package plans and operate in a rail environment is a prerequisite of being considered for these works. Permanent Sheet Piles 12m long, S355 Arcelor AZ(20-700) sheet pile, or similar. Extraction Piles 260m of EZ19-700 GRADE S355. 10 to 12m depth. To the South there is a requirement for temporary sheet piles to allow construction of the permanent RC Attenuation Tanks. This will require numerous visits to install and remove as construction is split into two phase. These works do not fall with the zones of influence of the operational railway. Temporary Sheet Piles GU21 sheet piles or similar 8m and 12m Installation of sheet pile are to commence Q1 2025 and will require numerous visits to complete in late Q1 2027.

Precast Competefor Summary. Kilnbridge have secured the HS2 Old Oak Common Station Works Packages WP13.1-Urban Realm Civils, Utilities and Earthworks and WP10.2 Ancillary Buildings. Part of this scope requires the design and installation of precast elements. Precast elements are listed below: • Precast Building Walls & Inverted T. Beams. • Precast Attenuation Tank. • Precast Solid Roof Slabs & upstands. • Precast Stairs. • Precast Beam & Block Floor • Hollowcore Slabs Kilnbridge are looking to place the precast order with a single supplier. The order will be let on a design, manufacture, and delivery basis. Suppliers are to take the detailed RIBA4 Design to Design for Construction & Manufacturing. The Subcontractor shall be responsible for providing design for construction drawings and will need to follow defined HS2/BBVS Design, Technical Assurance, Information exchange and BIM procedures to support Kilnbridge in delivering these elements of work. Furthermore, co-ordination with Kilnbridge design team to ensure inclusion of embedment's and openings where applicable. Precast elements will commence delivery in Late Q1 2025 and continue in accordance with programme into Q4C 2027 Suppliers are to advise in their expressions of interest those elements which they are prepared to supply.

Kilnbridge have secured the HS2 Old Oak Common Station Works Packages WP13.1 Urban Realm Civils, Utilities and Earthworks and WP10.2 Ancillary Buildings. The scope of works involves the design of permanent and temporary works which will require CAT3 checks. Below is a non-exhaustive list of the design items under consideration: • Precast concrete buildings • Structural Steel a • Façade systems • Cofferdams (TW) • Fencing (TW) in proximity to TFL & Network Rail assets • Formwork (TW) in proximity to TFL & Network Rail assets • Crane working platforms (TW) in proximity to TFL & Network Rail assets The subcontractor will be expected to adhere to HS2/BBVS Design, Technical Assurance, & Information exchange procedures when producing calculation packs and any other check output documents. The checks will take place over a 3-year period starting at the beginning of Q4 2024.

Kilnbridge have secured the HS2 Old Oak Common Station Works Packages WP13.1-Urban Realm Civils, Utilities and Earthworks and WP10.2 Ancillary Buildings. The scope requires the reinforcement detailing of numerous structural elements. Kilnbridge are looking for experience detailers to produce reinforcement drawings and bar bending schedules from intent drawings for around 2000t worth of reinforcement. Typical non exhaustive list of RC elements is below: • Buildings • Retaining walls • Building foundations • Landscape walls and stairs • Canopy foundations • Attenuation tanks • Columns • Ground floor floating slabs • Roof slabs supported by structural steel • Piles Detailers are to take the existing RIBA Stage 4 "Technical Design" to RIBA Stage 5 "Construction & Manufacturing". Supplier shall be responsible for providing for construction reinforcement drawings and schedules. The supplier will need to follow defined HS2/BBVS Design, Technical Assurance, Information exchange and BIM procedures to support Kilnbridge in delivering these elements of work. Furthermore, co-ordination with Kilnbridge design team to ensure inclusion of reinforcement around embedment's and openings will be required. In situ reinforced element elements will commence construction in late Q1 2025 and continue in accordance with programme into Q4 2028. Detailing of the reinforcement elements will commence as soon as reasonably practicable.

Kilnbridge have secured the HS2 Old Oak Common Station Works Packages WP13.1 Urban Realm Civils, Utilities and Earthworks and WP10.2 Ancillary Buildings. The scope of works involves the design of permanent and temporary works which will require CAT3 checks. Below is a non-exhaustive list of the design items under consideration: • Precast concrete buildings • Structural Steel a • Façade systems • Cofferdams (TW) • Fencing (TW) in proximity to TFL & Network Rail assets • Formwork (TW) in proximity to TFL & Network Rail assets • Crane working platforms (TW) in proximity to TFL & Network Rail assets The subcontractor will be expected to adhere to HS2/BBVS Design, Technical Assurance, & Information exchange procedures when producing calculation packs and any other check output documents. The checks will take place over a 3-year period starting at the beginning of Q4 2024.

Kilnbridge have secured the HS2 Old Oak Common Station Works Package WP10.2 for construction of the Headhouses and Ancillary Buildings. Part of the scope requires the construction of external and internal blockwork to numerous station buildings. • OCC South Portal • West Core • East Core • Train Crew and Catering Building • Euston North Portal • Cycle Hub Works include blockwork walls of varying thickness and grades, wind posts, vertical and horizontal restraint details, masonry support angles, wall ties, bed reinforcement, cavity trays, joints, fire sealant and all ancillary items where required. This includes detailing all openings including additional supports around the openings. Works will also include mock ups, samples and quality benchmarks as well as requiring potential development of nonstandard blocks to deliver the project requirements. Blockwork Subsubcontract works includes the provision of all necessary People, Equipment, Plant and Materials for the construction of the buildings external & internal blockwork. The Subsubcontractor will be responsible for progressing the RIBA stage 4 design to Stage 5 for construction .This will require submission to, and approval from, the Subcontractor, Contractor, the Contractor's representatives and the Employer to ensure the provided Subsubcontractors design satisfies the intent prior to construction. All in accordance with the Contractors design procedure and technical assurance requirements. The scope also includes the design, supply, installation, management and removal of temporary works required to execute the subsubcontract works. Quantity of blockwork CIRCA 5100m2. Expected Subsubcontract award Jan 25 Construction is to be carried out over a 3 year period commencing in Q3 2025 and completing in late Q2 2028. Multiple visits will be required over this period.

Kilnbridge have secured the HS2 Old Oak Common Station Works Package WP10.2 for construction of the Headhouses and Ancillary Buildings. Part of the scope requires the design, manufacture & installation of various roofing and external envelope systems to satellite buildings around the station complex. Those buildings include the following: • South Portal • North Portal • Cycle Hub • East Core • West Core • East & West Vents Part of the scope of works includes the design, manufacture, supply and installation of bird deterrent netting to the external areas of the buildings which comprise of the following listed below • Stainless steel grade 316 (grade 1.4401) netting • The system shall include all fixings, straps, clips, springs and any other accessories required to install the netting to the primary or secondary structure to the required specification. • Must meet the requirements for durability set out within the specification. • Works include also mock ups, samples and quality benchmarks. The Works shall effectively and reliably keep the façade and roof areas free from: • Bird habitation • Bird perching • Bird fouling The Works shall comply fully with the requirements of: • The Department for Environment, Food and Rural Affairs (Defra). • The Royal Society for the Prevention of Cruelty to Animals (RSPCA). • The Royal Society for the Protection of Birds (RSPB). • The Wildlife and Countryside Act 1981. The Sub subcontract works includes the provision of all necessary People, Equipment, Plant and Materials for the design, testing (if req'd), manufacture and installation of bird deterrent systems The Subsubcontractor will be responsible for progressing the schedule and associated Stage 4 drawings through design for manufacture and installation. This will require submission to, and acceptance from, the Subcontractor, the Contractor's representatives and the Employer to ensure the provided Sub subcontractors design satisfies the intent prior to construction. All in accordance with the Contractors design procedure and technical assistance requirements. The scope also includes the design, supply, installation, management and removal of any temporary works required to execute the sub subcontract works and the provision of sufficient temporary protection of the finished systems were required. Roof covering 1600+ sqm. Expected Subsubcontract award Jan 25 Construction is to be carried out over a 2.5 year period commencing in Q1 2026 and completing in late Q2 2028. Multiple visits will be required over this period.

Kilnbridge have secured the HS2 Old Oak Common Station Works Package WP10.2 for construction of the Headhouses and Ancillary Buildings. Part of the scope requires the design, manufacture & installation of 500+ internal door sets to numerous satellite buildings around the station complex. Those buildings include the following: • South Portal • West Core • East Core • Train Crew and Catering Building • North Portal • Cycle Hub • Various smaller vent structures The package includes a large number of internal doors sets and will include a range of different specification and performance criteria such as: - single, 1.5 and double door sets - Both Mild steel PPC coated and Stainless steel door sets - Fire rated doors (Various levels) - Security rated doors (Various levels) - Acoustic Rated doors (various levels) - Doors and hardware that cater for ultimate differential pressure loading - All associated hardware, suitable for use in Sub Surface - and all ancillary items where required. This includes detailing all openings including additional supports around the openings. Works include also mock ups, samples and quality benchmarks. The Subsubcontract works includes the provision of all necessary People, Equipment, Plant and Materials for the design, testing (if req'd), manufacture and installation of all internal doors sets. The Subsubcontractor will be responsible for progressing the door schedule and associated Stage 4 drawings to designed for manufacture and installation. This will require submission to, and acceptance from, the Subcontractor, the Contractor's representatives and the Employer to ensure the provided Subsubcontractors design satisfies the intent prior to construction. All in accordance with the Contractors design procedure and technical assistance requirements. The scope also includes the design, supply, installation, management and removal of any temporary works required to execute the subsubcontract works and the provision of temporary protection of the doors. Quantity of door sets - circa 570+. Expected Subsubcontract award Jan 25 Construction is to be carried out over a 2.5 year period commencing in Q1 2026 and completing in late Q2 2028. Multiple visits will be required over this period.

Kilnbridge have secured the HS2 Old Oak Common Station Works Package WP10.2 for construction of the Headhouses and Ancillary Buildings. Part of the scope requires the design, manufacture & installation of an ETFE roofing systems to one of the satellite buildings around the station complex. The ETFE roofing system is part of the scope or works to the building known as the Cycle Hub The package consists of an inclined rooflight with stressed single foil membrane which will include : - ETFE foil/film - Natural in colour with the required acceptable transparency - An Extruded Aluminium portal frame / upstand - Polyester powder coating finish to the required colour - Any pressed Metal components / accessories including gutters flashings, copings, capping reveals etc were required - Works include also mock ups, samples and quality benchmarks. The specifications and performance requirements included but not limited to are: - Architectural & Structural specifications - Various roofing and drainage specifications and standards The Sub subcontract works includes the provision of all necessary People, Equipment, Plant and Materials for the design, testing, manufacture and installation of the ETFE roof system The Subsubcontractor will be responsible for progressing the roof schedule and associated Stage 4 drawings through design for manufacture and installation. This will require submission to, and acceptance from, the Subcontractor, the Contractor's representatives and the Employer to ensure the provided Sub subcontractors design satisfies the intent prior to construction. All in accordance with the Contractors design procedure and technical assistance requirements. The scope also includes the design, supply, installation, management and removal of any temporary works required to execute the subsubcontract works and the provision of sufficient temporary protection of the finished roofing systems were required. Roof covering circa 180sqm Expected Subsubcontract award Q1 2025 Construction is to be carried out over a 2.5-year period commencing and completed in Q2 2028.

Kilnbridge have secured the HS2 Old Oak Common Station Works Package WP10.2 for construction of the Headhouses and Ancillary Buildings. Part of the scope requires the design, manufacture & installation of 100+ external door sets to numerous satellite buildings around the station complex. Those buildings include the following: • South Portal • West Core • East Core • Train Crew and Catering Building • North Portal • Cycle Hub • Various smaller vent structures • DNO interface substation The package includes a large number of external doors sets and will include a range of different specification and performance criteria such as: - single, 1.5 and double door sets - Oversized plant access doors - Louvred doors - External envelope doors with Integrated cladding to external face - Mild steel and Stainless-steel door sets and frames with varied coatings to resist corrosion. - Vision panels - Installed to various substrates - Fire rated doors (Various levels) - Security rated doors (Various levels) - Acoustic Rated doors (various levels) - Weather rated (various levels) - Integration with the BMS (building management system) - Doors and hardware that cater for ultimate differential pressure loading - Provision of all associated hardware, suitable for use in public areas and sub surface - and all ancillary items where required. This includes detailing all openings including additional supports around the openings. Works include also mock ups, samples and quality benchmarks. The Sub subcontract works includes the provision of all necessary People, Equipment, Plant and Materials for the design, testing, manufacture and installation of all External doors sets. The Subsubcontractor will be responsible for progressing the door schedule and associated Stage 4 drawings to be designed for manufacture and installation. This will require submission to, and acceptance from, the Subcontractor, the Contractor's representatives and the Employer to ensure the provided Sub subcontractors design satisfies the intent prior to construction. All in accordance with the Contractors design procedure and technical assistance requirements. The production of mock ups and samples as required for acceptance. The scope also includes the design, supply, installation, management and removal of any temporary works required to execute the sub subcontract works and the provision of sufficient temporary protection of the doors. The works will also require multiple visits throughout the contract duration from design stage to completion. Quantity of door sets - circa 90+. Expected Subsubcontract award Jan 25 Construction is to be carried out over a 2.5 year period commencing in Q1 2026 and completing in late Q2 2028. Multiple visits will be required over this period.

Kilnbridge have secured the HS2 Old Oak Common Station Works Package WP10.2 for construction of the Headhouses and Ancillary Buildings. Part of the scope requires the design, manufacture & installation of various ventilation and envelope louvre systems to numerous satellite buildings around the station complex. Those buildings include the following: • South Portal • North portal • West Core • East Core • Various smaller vent structures The scope of works includes a large number of louvre types ranging in size and build up and will include a range of different specification and performance criteria such as: - Acoustic Louvres (various ratings to meet specifications ) - Mechanical louvre (varied to meet specifications) - Louvres to meet various requirements including security, acoustic, fire and weather proof ratings - Various finishes and materials - Isolators applicable to reduce any risk of bi-metallic corrosion. - Pest control mesh (varied to meet specifications) - Securing to various substrates - all louvre materials should be compliant to Class A-S3D2 in accordance with BS EN 13501-1:2007 - Fire rating to comply with BROOF (t4) requirements (varied class ratings to meet specifications for roof louvres) - and all ancillary items where required. This includes detailing all openings including additional supports around the openings. Works include also mock ups, samples and quality benchmarks The Sub subcontract works includes the provision of all necessary People, Equipment, Plant and Materials for the design, testing (where required including potential post installation testing to verify performance), manufacture and possible installation of various louvre systems The Subsubcontractor will be responsible for progressing the louvre schedule and associated Stage 4 drawings through design for manufacture and in some cases, installation. This will require submission to, and acceptance from, the Subcontractor, the Contractor's representatives and the Employer to ensure the provided Sub subcontractors design satisfies the intent prior to construction. All in accordance with the Contractors design procedure and technical assistance requirements. The scope also includes the design, supply, installation, management and removal of any temporary works required to execute the sub subcontract works and the provision of sufficient temporary protection of the louvres. The works will require multiple visits throughout the contract duration from design stage to completion. Quantity of louvres - circa 800+m2 Expected Subsubcontract award Jan 25 Construction is to be carried out over a 2.5 year period commencing in Q1 2026 and completing in late Q2 2028. Multiple visits will be required over this period.

Kilnbridge have secured the HS2 Old Oak Common Station Works Package WP10.2 for construction of the Headhouses and Ancillary Buildings. Part of the scope requires the design, manufacture & installation of various roofing systems to satellite buildings around the station complex. Those buildings include the following: • South Portal • West Core • East Core • Train Crew and Catering Building • North Portal • Cycle Hub • Interface sub station • East Vent The package includes Various roofing systems and build ups and will include a range of different specification and performance criteria such as: - Polymer primers - Liquid applied waterproofing (to meet required specification) - Various Membrane types (to meet required specification) - Water flow reduction layers (to meet required specification) - Insulation (to meet required specification) - Vapour control layers. - Drainage outlets and assemblies with compatible leaf and gravel guards - Inspection chambers - Concrete paving slabs and pedestals - Zinc double seam standing roof - Aluminium Standing Seam Roofing - Perimeter Gutters - Pressed components/ accessories with a polyester powder coating finish - Drainage edge channel with stainless steel grating - Movement/expansion joints - and all ancillary items where required. This includes detailing all openings including additional supports around the openings. Works include also mock ups, samples and quality benchmarks. Specifications and performance requirements included but not limited to - Materials fire classification BROOF (t4) in accordance with BS EN 13501-5 - Acoustic BS EN ISO 354 ( as required by the acoustic consultants ) - BS EN 507 'Roofing products from metal sheet. Specification for fully supported roofing products of aluminium sheet - Thermal Performance Requirements - BS EN 14782 'Self-supporting metal sheet for roofing, external cladding and internal lining. Product specification and requirements - BS 5427 'Code of practice for the use of profiled sheet for roof and wall cladding on buildings'. - Drainage BS EN 12056: Part 3 and BS 8490 - Condensation with BS 5250, BS EN ISO 13788 The Subsubcontract works includes the provision of all necessary People, Equipment, Plant and Materials for the design, testing, manufacture and installation of all roof systems The Subsubcontractor will be responsible for progressing the roofing schedule and associated Stage 4 drawings through design for manufacture and installation. This will require submission to, and acceptance from, the Subcontractor, the Contractor's representatives and the Employer to ensure the provided Sub subcontractors design satisfies the intent prior to construction. All in accordance with the Contractors design procedure and technical assistance requirements.

Kilnbridge have secured the HS2 Old Oak Common Station Works Package WP10.2 for construction of the Headhouses and Ancillary Buildings. Part of the scope requires the supply and manufacture of bespoke architectural & Standing seam Aluminium, including associated rainwater systems to numerous satellite buildings around the station complex. Those buildings include the following: • North Portal • East core • Cycle hub • Train crew and catering building • Number of smaller vent structures The package includes a range of panel profiles, folded sections, interfaces and will include a range of different specification and performance criteria such as: - Various panels with folded edges to form a 3-dimensional elevation. - Bull nose cladding - Soffit panels (with hinged details) - Radius rainscreen panels - Copings (including radius) - Skirtings (stainless steel & Aluminium) with various finishes - All the above in various lengths and shapes (circa 2m-9m and above) - Various material thickness - Anodising - Polyester powder coated - Welded stiffeners and joints - Secondary support system - Security specifications - Fire specifications (meet the requirements of the Fire engineer's documentation as minimum) - Acoustic & Thermal performance requirements - Any other standards or specifications required by the employer - Any ancillary items bracketry etc where required. This includes all openings including additional supports around the openings. Works include also mock ups, samples and quality benchmarks. The Sub subcontract works includes the provision of all necessary People, Equipment, Plant and Materials for manufacture, supply and testing of the various cladding and rainscreen cladding panels and ancillary items. The Subsubcontractor will be responsible for progressing the schedule and associated detailed drawings for manufacture and installation. This will require submission to, and acceptance from, the Subcontractor, the Contractor's representatives and the Employer to ensure the provided Sub subcontractors design satisfies the intent prior to construction. All in accordance with the Contractors design procedure and technical assistance requirements. Quantity - circa 800m2 + Expected Subsubcontract award Jan 25 Construction is to be carried out over a 2.5-year period commencing in Q1 2026 and completing in late Q2 2028. Multiple visits will be required over this period.

Kilnbridge have secured the HS2 Old Oak Common Station Works Package WP10.2 for construction of the Headhouses and Ancillary Buildings. Part of the scope requires the design, manufacture & installation of an ETFE roofing systems to one of the satellite buildings around the station complex. The ETFE roofing system is part of the scope or works to the building known as the Cycle Hub The package consists of an inclined rooflight with stressed single foil membrane which will include : - ETFE foil/film - Natural in colour with the required acceptable transparency - An Extruded Aluminium portal frame / upstand - Polyester powder coating finish to the required colour - Any pressed Metal components / accessories including gutters flashings, copings, capping reveals etc were required - Works include also mock ups, samples and quality benchmarks. The specifications and performance requirements included but not limited to are: - Architectural & Structural specifications - Various roofing and drainage specifications and standards The Sub subcontract works includes the provision of all necessary People, Equipment, Plant and Materials for the design, testing, manufacture and installation of the ETFE roof system The Subsubcontractor will be responsible for progressing the roof schedule and associated Stage 4 drawings through design for manufacture and installation. This will require submission to, and acceptance from, the Subcontractor, the Contractor's representatives and the Employer to ensure the provided Sub subcontractors design satisfies the intent prior to construction. All in accordance with the Contractors design procedure and technical assistance requirements. The scope also includes the design, supply, installation, management and removal of any temporary works required to execute the subsubcontract works and the provision of sufficient temporary protection of the finished roofing systems were required. Roof covering circa 180sqm Expected Subsubcontract award Q1 2025 Construction is to be carried out over a 2.5-year period commencing and completed in Q2 2028.

Kilnbridge have secured the HS2 Old Oak Common Station Works Package WP13.1-Urban Realm Civils, Utilities and Earthworks. The scope includes the installation of pressurised Utilities services. • Potable water • Fire mains • Surface & foul water rising mains. Kilnbridge invites expressions of interest from suitable qualified subsubcontractors to deliver these services. Scope will include provision of all plant, equipment, labour and materials necessary to install, test and assure the works. The subsubcontractor will deliver the construction and manufacturing, construction detailing and handover stages, ensuring that construction adheres to the planned specifications, quality standards, and sustainability goals. Installation of utilities are to commence Q2 2025 and will require numerous visits to complete in late Q2 2028.

Kilnbridge have secured the HS2 Old Oak Common Station Works Package WP13.1-Urban Realm Civils, Utilities and Earthworks. Part of this scope requires the installation of waterproofing to the roof slabs of the Western HS2 attenuation tank and the GWML attenuation tank. Western HS2 Attenuation tank roof slab to be waterproofed = 1379m2. GWML Attenuation tank roof slab to be waterproofed = 225m2 Works are expected to be completed in 2 to 3 mobilisations commencing in Q4 2025 and Q4 2026. The waterproofing systems shall be a spray applied membrane to BBA certification. The membrane is to be applied to an in-situ concrete substate and achieve a U4 finish compatible with system requirements and BBA Roads and Bridges Certification requirements. Coatings shall be a BBA certified liquid applied structural waterproofing system suitable and certified for below grade applications on horizontal surface. The design life is 120years. All necessary precautions shall be taken to protect membrane from damage during construction operations. All Testing shall be in accordance with BBA certification requirements.

To ensure that concrete materials meet the design specifications and are compliant with applicable standards (e.g., BS EN 12350-2 for slump testing, BS EN 12390 for compressive strength testing).Sampling of fresh concrete for slump testing, air content, and temperature.Casting and curing concrete cubes/cylinders for compressive strength tests at 7,14, and 28 days. Conducting tensile strength and flexural strength tests as required. Mix design review to verify compliance with project specifications. Non-destructive testing (NDT) methods, such as Schmidt hammer testing or ultrasonic pulse velocity, if required. Report generation with detailed results and compliance statements. Test reports for each batch of concrete. Certificates of compliance for concrete materials. Plate Bearing Tests, To determine the bearing capacity and compaction level of the subgrade for construction purposes (in accordance with BS 1377-9). Site preparation and marking of test locations as per site plan. Placement of the load plate (300 mm or 600 mm diameter depending on specification). Application of load increments via hydraulic jack and recording settlement values. Analysis of results to determine the modulus of subgrade reaction (k-value). Comparison with design requirements for bearing capacity. Field test logs and calibration certificates for test equipment. Analysis report including graphical plots of load vs. settlement. Recommendations for subgrade improvement if required. This package includes Environmental Engineer To monitor and ensure compliance with environmental regulations, minimising environmental impacts during construction. Geotechnical Engineer To assess soil and ground conditions to provide foundation and earthworks recommendations

The Subsubcontract works is the provision of all necessary People, Equipment, Plant, Materials, methodology, design and detailing for The Screeding works as described in this document, scope drawings and specification. Including all required temporary works, and their design, installation of, ongoing maintenance of and removal required for the safe execution of the Subsubcontract works. The Subsubcontract works shall be undertaken in accordance with the various documents referenced within this document including Appendix 2, Document Register. The scope of each ancillary building is from Platform level to the highest point, internal roof level of each building. Subsubcontractor Design Scope: The Subsubcontractor shall be responsible for developing the Contractors Detailed Design to Design for Construction & Installation. The Subsubcontractor shall be responsible for providing their own construction drawings, compliant with the design intent of the Contractors design. For further details, please see Design for Construction and Manufacturing (Contractor Design) Management Plan for Contract 1CP02-BVS-DS-PLN-SS07- 000020. The Subsubcontractor shall be responsible for the co-ordination and integration of their design with Others provided by the Contractor and the Contractor's design consultant, Specialist Designers / Engineers, Consultants or Specialist Subcontract Designers, and shall co-operate and consult with these other designers to the extent necessary for the proper and timely performance of their own and Others' works. The Subsubcontractor will allow for interfaces with other trades including but not limited to: • Mechanical & Electrical permanent works • Door installations • Drainage/ Public Health • Fire stopping • Floor Hatches • Floor finishes • Grated flooring • Other work packages

Kilnbridge have secured the HS2 Old Oak Common Station Works Package WP10.2 for Fit-Out of the Portal and Ancillary Buildings. Those buildings include the following: • South Portal • DNO Substation • West Core • East Core • North Portal • Train Crew & Catering Building • Cycle Hub • Security Booth The package includes a range of Multiple services: • Painting & decorating (Soffits, walls, floors) • FF&E of Offices • kitchenettes cupboards • Sanitaryware • IPS units • Ceilings • Tiling walls • Flooring finishes • Screed The Sub subcontract works includes the provision of all necessary People, Equipment, Plant and Materials for manufacture, supply and testing (if req'd). The Subsubcontractor will be responsible for progressing the schedule and associated detailed drawings for manufacture and installation. This will require submission to, and acceptance from, the Subcontractor, the Contractor's representatives and the Employer to ensure the provided Sub subcontractors design satisfies the intent prior to construction. All in accordance with the Contractors design procedure and technical assistance requirements. Expected Subsubcontract award TBC Construction is to be carried out over a 2.5-year period commencing in Q1 2026 and completing in late Q2 2028. Multiple visits will be required over this period.