UK Public Sector Contracts & Tenders

The scope of the Subsubcontract works is the provision of all necessary People, Equipment, Plant, Materials, methodology, construction detailing, testing, assurance and handover for the Vehicle Restraint Barrer (VRB) along the Station Access Retaining Wall and within the Interfaces Susbstation Compound as described in this document, scope drawings and specifications. This will include all required temporary works, and their design, installation of, ongoing maintenance of and subsequent removal, required for the safe execution of the Subsubcontract works. The extent of the VRB within this scope of works is limited to the capping beam of the underlying retaining wall indicated in Fencing Drawings as N1 Vehicle Barrier, and the two runs of Vehicle Barrier (contained within DNO Substation Compound Works) to be carried out within the site, as depicted in Appendix 01. The Retaining Wall from Old Oak Common Lane is formed in the sum of three adjoining retaining structures (SSEN, Crossrail Depot, and Station Access Retaining Wall). Each listed below has specific drawings sets relevant to that length of wall. • Station Access Retaining Wall (SARW) • Cross Rail Depot Retaining Wall (CRL Depot) • SSEN Substation Retaining Wall More information to be provided..

Kilnbridge have secured the HS2 Old Oak Common Station Works Package for the construction of Urban Realm elements and the Head Houses and Ancillary Buildings. Part of these works require the installation of two, precast concrete attenuation tanks to the eastern part of the site. These tanks are a Subcontractor's design portion. Eastern HS2 Attenuation Tank • Area 1115m2 • Volume 1165m3 • Tank Depth 1.1m • Void Ratio 0.95 Eastern HS2 Dirty Water Tank • Area 1115m2 • Volume 350m3 • Tank Depth 1.6m • Void Ratio 0.95 Kilnbridge are seeking the services of suitably qualified and experienced Sub-subcontractor who shall be responsible for developing the Contractors Detailed Design to Design for Construction & Manufacturing. Taking from RIBA 4 to RIBA 5 stage. The Sub-subcontractor shall be responsible for providing their own design and design for construction drawings, compliant with the design intent of the Contractors Designer. The Sub-subcontractor will be responsible for ensuring the submission and acceptance of their design from the Contractor and Contractor's design consultant through the Subcontractor. Works include the design , manufacture and supply of precast base, walls and roof units to site. Scope to include for, but not limited to, technical assurance, BIM modelling, asset scheduling and labelling, drawings for approval, as built drawings, indicative construction sequence methodology, submission of design packs, material approvals, and sustainability and environmental management. Sub-subcontractor to interface their design with incoming services as detailed on the construction drawings. Construction is currently forecasted to be carried Q2 2026

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 bird netting and stainless steel balustrade infill panels to satellite buildings around the station complex. Those buildings include the following: • East Vent 1 • East Vent 5 • North Portal • South Portal • Train crew and catering • West Core • West Vent 1 • West vent 2 • East Core • 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. 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 • Must meet the requirements for durability set out within the specification. • Works include also mock ups, samples and quality benchmarks. The Subsubcontractor will be responsible for progressing the schedule and associated Stage 4 drawings through design for manufacture and installation of bird netting and design and supply of stainless steel balustrade infill panels. 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. Construction is to be carried out over a 2 year period commencing in Q3 2026 and completing in Q3 2028. Multiple visits will be required over this period.

Kilnbridge have secured the HS2 Old Oak Common Station Works Package WP13.01 for construction of the Urban Realm. Part of the scope requires the installation of Cement Bound Granular Material Subbase for the permanent road network. This is completed in phases/access date areas across the extent of the site. The Sub subcontract works includes the provision of all necessary People, Equipment, Plant and Materials for the installation and testing of CBGM. Works must comply with Series 800 and HS2 External Works Specification (provided upon engagement). Total CBGM subbase area is: 9400m2 Average CBGM thickness: 230mm Construction is to be carried out over a 2.5 year period commencing in Q3 2026 and completing in late Q2 2028. Multiple visits will be required over this period.