UK Public Sector Contracts & Tenders

This project includes, but is not limited to the following packages of work: • A new circa 700 Ml/d High Lift Pumping Station (HLPS). • A new circa 260 Ml/d Slow Sand Filter (SSF) Recirculation and Run-to-Waste system. Future works may include the following and is included in the value given in Section II.1.5. • A new ultraviolet irradiation system to treat SSF filtrate for Cryptosporidium inactivation. • A new circa 50 Ml/d contact tank draindown pumping station and dechlorination system. One contract for the full scope of the PIN is intended to be procured by issue of a Contract Notice, but the final contract may not include the full scope and Thames Water may, through the procurement, change its requirements as indicated in this PIN.

The laboratory at Thames Water is critical for meeting our regulatory and operational requirements. It encompasses a wide range of activities, including the provision of assurance for the services we deliver to our customers, the community and the environment, all while maintaining UKAS accreditation. The Thames Water laboratory analyses over half a million samples and generates almost three million results per annum. The current laboratory facility is approaching the end of its service life and Thames Water are considering a replacement within the next asset management period (AMP), which spans 2025-2030. Combined with a growing demand for laboratory services, operational insights and regulatory requirements there is a generational opportunity to establish a centre of excellence for a future laboratory capability, integrating cutting-edge systems, skilled personnel, and streamlined processes. This initiative aims to fortify our operational resilience, enhance efficiency, and sustain the delivery of life's essential service. Thames Water is currently considering a range of options for the delivery of a new capability. These range from full ownership and operational responsibilities, to leasing and operating a facility. At present, Thames Water does not envisage a fully outsourced model but are open to understand what opportunities exist across the spectrum of potential delivery models. This Market Engagement is to help inform options for supply chain delivery of services to deliver a new laboratory capability for Thames Water. Please see Section VI.3 Additional Information for access to the supplier information pack and process for submitting your responses through IASTA Smartsource.

Thames Water has planned for 570km to be delivered during AMP8 (with a further 1,000km in AMP9). The intention is to split this between water quality driven mains rehab (12km), burst driven mains rehab (108km) and whole DMA replacement (380km). This framework is intended to compliment the existing framework by providing supplementary support in addressing the evolving demands of the current framework in the next AMP and going forward. The aim of the AMP8 Distribution Mains Renewal Programme is to replace the pipework (excluding new polyethylene) within the worst performing DMAs so that the amount of leakage in each of those areas is reduced. The business drivers for the schemes are: • Network resilience • Leakage reduction • Reduce risk of mains failure and customers interruptions • Improving C-Mex measure The objective of the Distribution Mains Renewal Programme is the structural renewal of targeted water distribution mains and all associated apparatus in the network to reduce bursts and leakage. Renewal of the water mains network shall include but not be limited to: • Optimisation, structural replacement or relining of distribution water mains within DMAs and bounded by district meters and the District Boundary Valves. • Structural replacement of all service connections from the distribution mains to customer boundaries, including installation of a suitable boundary box. • Replacement of all apparatus connected to the network including valves, hydrants, disinfection points, air valves, etc. • Securing abandoned mains by cutting and capping. Removing surface covers, marker posts and plates of abandoned washouts, hydrants, and valves etc. so that only covers relating to live apparatus remain.

AMP7/AMP8 upgrade project at Oxford Sewage Treatment Works (STW)

Thames Water's Capital Delivery business is planning to spend circa £790m on major projects during AMP8. Thames will be holding a webinar to provide an overview of its anticipated major projects pipeline for AMP8. This webinar intends to provide further detail on the pipeline (where available), relating to the programme, delivery model, and key challenges & risks. The pipeline will also be shared periodically via a separate notice on the Find a Tender Service. The pipeline is relatively fluid and therefore neither the publication of the anticipated pipeline, nor any of the information presented at the webinar, should be taken as a commitment or representation on the part of Thames Water Utilities Limited (or any other organisation) to enter into a contractual arrangement or to proceed with a procurement. Circumstances may change and we cannot guarantee that the requirements, contract value, and/or timeline will be as stated. Periodic pipeline publications and associated events will be used to provide visibility of the evolving Thames Water Capital Delivery major projects pipeline. Suggested attendees for this webinar are tier 1 contractors who are interested in and capable of delivering major capital works projects typically (>£30m) for Thames Water in the UK. For details on how to register your attendance and join the webinar, please see section II.2.14 of this notice.

We are preparing to launch a significant programme of major capital projects as part of our AMP8/9 investment period. Our new Major Projects Framework aims to secure substantial delivery contracts, ensuring that each contractor awarded a place will have a project upon executing the Framework Agreement. Our focus is on reducing unnecessary bidding efforts and fostering long-term partnerships with trusted suppliers. We seek experienced and innovative partners who align with our ambition to deliver these essential projects. Through this framework, we plan to award contracts for works, goods, and services needed for AMP8, with an option to extend into AMP9 based on delivery success. Subject to governance and procurement procedures, we aim to finalize agreements with selected partners by March 2026 to facilitate efficient project start-up. Your feedback is vital as we finalise our approach, and we look forward to working closely with the market to ensure the success of this programme.

Business Analysis: Business Analysis at Thames Water drives successful change by analysing business situations, assessing feasibility, and defining clear requirements across people, processes, and technology. Acting as a bridge between stakeholders and delivery teams, it enables the delivery of solutions that achieve strategic outcomes and deliver key business benefits. Additionally, Business Analysis fosters process improvement, strengthens stakeholder engagement, and ensures governance compliance through high-quality analysis artifacts and a commitment to continuous improvement. Key Roles looking for in this tender: Junior Business Analyst (Gartner level 1) - works on small tasks or parts of a project, has a basic understanding of BA tools and techniques, good communication, eagerness to learn. Responsible for low-complexity tasks under close supervision and has limited decision-making authority. Document basic processes and simple requirements and create simple reports. Support more experienced BAs in workshops and stakeholder meetings. Business Analyst (Gartner level 2) - Works on clearly defined tasks within projects, handles moderately complex analysis, usually within a single business area, works under direction of Senior or Lead Business Analyst; receives guidance on priorities and methods. Limited to project-level stakeholders. Senior Business Analyst (Gartner level 3) - Leads BA activities across multiple projects or programmes (including strategic analysis); often covers multiple business domains, deals with high ambiguity and complex business situations, sets BA approach and advises others. Facilitates decision-making at senior stakeholder level. Coaches and mentors other BAs. Activities as per the BA above, whilst demonstrating a higher level of responsibility, complexity, autonomy, and influence. Lead Business Analyst (Gartner level 4) - Focused on Strategic alignment and team leadership. Leads BA Activities across Enterprise-level initiatives, multiple projects, and strategic programs. Align requirements with strategic and technical roadmaps. Define BA standards, governance, and best practices. Manage and coach BA team members. Act as key liaison between business and technology leadership. Project Management: Project Management in the Digital function at Thames Water leads one or multiple projects depending on its size and scale of complexity. A project manager is a professional responsible for planning, organizing, and overseeing the execution of a project from start to finish following the Thames Water delivery framework/methodology. They ensure the project meets its goals within the agreed scope, schedule, budget, quality standards, and resources. Key Roles: Project Support Office role (Gartner Level 1): A Project Support Office provides the administrative, logistical, and coordination backbone that keeps programmes/ projects running smoothly. It supports project managers, teams, and sometimes entire programmes by ensuring consistency, documentation control, reporting, and governance. Junior Project Manager (Gartner Level 1 or experience in supporting / PMO roles): A junior project manager assists with planning, execution, and monitoring of projects to ensure they are delivered on time, within budget, and to the required quality standards. Works as part of a project team / leads on a small workstream as part of a larger project. Project Manager (Gartner Level 3): responsible for planning, executing, and delivering projects on time, within scope, and within budget. They coordinate teams, manage risks, and ensure that project outcomes align with organisational goals. Leads the day to day management of a project, ensuring all activities are organised, monitored, and delivered to the required quality standards Senior Project Manager (Gartner Level 4): leads complex, high value projects and often oversees multiple project teams. They are responsible for ensuring delivery within agreed scope, time, cost, and quality constraints while aligning outcomes with strategic business objectives. Provides leadership, direction, and oversight for large or multiple projects, ensuring they meet organisational goals and deliver measurable results. They act as the primary point of accountability for senior stakeholders. Programme Manager (Gartner Level 5): oversees and coordinates multiple related projects to ensure they collectively deliver strategic organisational outcomes. They provide leadership, governance, and direction across a programme of work, ensuring alignment with business goals and successful delivery of benefits. Act as the primary point of accountability into senior stakeholders / Executives. Business Change: Business Change function helps to support and embed change when implementing technology change projects. It ensures effective transitioning of our business and stakeholders to a desired future state (such as adopting new systems / new approaches) to create value and integrate into business operations. The function includes taking a structured approach to managing change; ensuring awareness, willingness, capability and training to adopt change; understanding and tracking change impact; managing risks related to change implementation (including resistance and adoption barriers); delivering change interventions to office-based and field-based operational colleagues. Key Roles: Change Lead (Gartner level 3) Own and lead the change impact assessment for the project / programme Design, deploy and manage key change management deliverables such as the change plan, training needs assessment, communications plan and change readiness assessment Identify and collaborate with Change Analysts (and Champions within each business area), building a strong internal network for change Build and maintain strong relationships with external and internal teams to ensure alignment on goals and solicit feedback from stakeholders involved and impacted by the change Undertake targeted pre-change activities including stakeholder mapping, change impact and communication, engagement and training plans Undertake change transition activities (e.g. user acceptance) Identify and collaborate with sponsor, programme manager, project team to manage risks (threats and opportunities) and issues regarding ability to adopt new ways of working Work closely with the change areas to make sure we map out the change impact and dependencies Manage change to scope, time and budget within agreed tolerances or escalate changes accordingly Senior Change Analyst (Gartner level 2) Support more complex change and engagement activity per the needs of the Change Strategy and Change Plan Prepares for and co-ordinates change workshops Co-ordinates communications and engagements in delivery of the Change and Communications Plans Co-ordinates training requirements Provides support in terms of monitoring, measuring and reporting change Tracks and assures change benefits All other activities per the Change Analyst (below) Change Analyst (Gartner level 1) Supports the Change Lead to conduct change impact assessments and stakeholder analysis Supports the development and delivery of the change strategy, change plan and activities Creates and delivers essential change communications and training materials Understands initial readiness for change across impacted teams Tracks change readiness and adoption metrics Facilitates workshops and feedback sessions where interventions are needed Works closely with the impacted teams to ensure the change impact is mapped and dependencies highlighted Identifies and escalates risks and issues that would impact the adoption of the change Communications Lead (Gartner level 3) Provides change narrative for communications and engagements Uses the Change Plan, Communications Plan and Communication Framework to develop a compelling change narrative for regular communications and engagements related to the project or programme Monitors and measure the effectiveness of the communications and rapidly evolve the communication/engagement approaches Delivers change communications interventions - e.g. briefings, newsletters, webinars, internal social media, workshops Interfaces with other Change and Communications roles to enable alignment Creates content to embed key messaging at programme and portfolio level aligned to overall company Purpose, Priorities and Values Training Lead (Gartner level 3) Understands training needs through stakeholder engagement, role analysis, and impact assessments (provided by Change Lead and Change Analysts) Owns the relationship and works closely with Thames Water Learning & Development team Drives the production of the training elements - per the training needs analysis - to meet the programme or project timescales Ensures quality and effectiveness of learning and alignment with standards Engages with the business to develop and agree training plans Monitors training uptake and works with business stakeholders to ensure targets met Identifies additional training needs (after go-live) and provides suitable training solutions Works with subject matter experts (SMEs) and vendors to create training materials (e.g. eLearning, videos, user guides, classroom courses) Organises, manages and supports the delivery of training sessions Gathers feedback and continuously improves training effectiveness Trainer (Gartner level 2) Develops and designs face to face training in order to meet agreed learning objectives Prepares training content to ensure maximum training effectiveness Deeply understands the training content (ie 'the solution') and the business process / context Personally delivers training to end users - ensuring the training meets learning objectives Evaluates the training delivered and follows up to understand training effectiveness

Thames Water is undertaking early market engagement to inform a potential future procurement for the design, construction, commissioning, and operation of a new Anaerobic Wastewater Treatment system. The purpose of this notice is to gauge market interest, understand current capability, and gather insight from suppliers with relevant expertise in delivering sustainable bioenergy, waste-processing, and resource recovery solutions. The proposed Anaerobic Wastewater Treatment plant will support Thames Water in achieving its environmental, waste management, and decarbonisation objectives by converting crude sewage into renewable energy and potential nutrient products. As we develop our commercial strategy and technical specification for Anaerobic Wastewater Treatment systems, we are seeking feedback from experienced operators, technology providers, engineering consultants, and integrators with expertise of anaerobic wastewater treatment and wider bioresource sector. This engagement is not a call for competition and does not formally commence any procurement process. Instead, it aims to: • Test the level of market capacity and interest in the forthcoming opportunity • Explore innovative technologies, delivery models, and performance approaches • Identify potential risks, dependencies, and considerations for project design • Inform Thames Water's decision making ahead of any formal procurement activity Suppliers who express interest may be invited to participate in market engagement sessions, questionnaires, or one to one discussions. All feedback received will be used solely to shape the Authority's future strategy

As part of Thames Water's ongoing programme of preliminary market engagement for the South East Strategic Reservoir Option (SESRO) project, this notice is intended to inform interested parties about upcoming engagement opportunities and to encourage them to register their interest to participate. Please note that this is not a call for competition. Contractors and investors are invited to express their interest in participating in a series of engagement activities including a spring market engagement event scheduled for 17th March 2025, to be held at a central London venue. The engagement will help develop a wider understanding of the delivery of the project from both a construction and investment perspective by showcasing two large scale future opportunities: Infrastructure Provider (IP): The IP will be responsible for taking forward the design, building, and financing the majority of assets within the SESRO project. Main Works Contractor (MWC): To construct and commission the assets under a target price contract, working initially with TW and then the IP once the IP contract is awarded. This engagement presents an opportunity for Thames Water to collaborate with the market in refining its procurement approach and contracting terms. Additionally, it aims to encourage cross-party discussions that align the project's development with market trends, taking into account the perspectives of both MWCs and investors. To access the link to register your interest in market engagement for SESRO, please refer to Section VI.3 Additional Information.

Thames Water's Capital Delivery Office is planning to spend circa £1.34bn on remaining AMP7 and upcoming AMP8 major projects. The indicative pipeline aims to inform the market of Thames's current procurement and delivery plans for its major projects. The pipeline will be updated and shared regularly to ensure that the latest information is available. The pipeline can be found on Thames's webpage at: https://www.thameswater.co.uk/about-us/working-with-us/capital-delivery-major-projects-pipeline. The pipeline is relatively fluid and therefore neither the publication of the anticipated pipeline, nor any of the information presented at the webinar, should be taken as a commitment or representation on the part of Thames Water Utilities Limited (or any other organisation) to enter into a contractual arrangement or to proceed with a procurement. Circumstances may change and we cannot guarantee that the requirements, contract value, procurement procedure and/or timeline will be as stated. Periodic pipeline publications and associated events will be used to provide visibility of the evolving Thames Water Capital Delivery major projects pipeline.

As part of Thames Water's ongoing programme of preliminary market engagement for the South East Strategic Reservoir Option (SESRO) project, this notice is intended to inform interested parties about upcoming engagement opportunities and to encourage them to register their interest to participate. Please note that this is not a call for competition. Contractors and investors are invited to express their interest in participating in a series of engagement activities including a spring market engagement event scheduled for 17th March 2025, to be held at a central London venue. The engagement will help develop a wider understanding of the delivery of the project from both a construction and investment perspective by showcasing two large scale future opportunities: Infrastructure Provider (IP): The IP will be responsible for taking forward the design, building, and financing the majority of assets within the SESRO project. Main Works Contractor (MWC): To construct and commission the assets under a target price contract, working initially with TW and then the IP once the IP contract is awarded. This engagement presents an opportunity for Thames Water to collaborate with the market in refining its procurement approach and contracting terms. Additionally, it aims to encourage cross-party discussions that align the project's development with market trends, taking into account the perspectives of both MWCs and investors. To access the link to register your interest in market engagement for SESRO, please refer to Section VI.3 Additional Information.

This PIN is issued to encourage third parties to submit proposals for solutions covering water resources, demand management or leakage services for Thames Water Utilities Ltd for consideration in the Water Resources Management Plan (WRMP24) process. These solutions will help us meet our future water needs and will be evaluated according to the bid assessment framework principles.

Thames Water Utilities Ltd (TWUL) intends to establish new professional services frameworks to support its Strategic Resource Options (SRO) programme. This is the first phase of a longer-term procurement strategy to establish the professional services supply chain that TWUL needs to support its wider business. This PIN relates to Phase 1 only. Existing TWUL professional services frameworks are not impacted by the procurements outlined in this notice. TWUL's current portfolio of SRO projects includes, but is not limited to, the South East Strategic Reservoir Option (SESRO), Severn to Thames Transfer (STT), London Water Recycling (LWR) projects, Thames to Affinity Transfer (T2AT) and Thames to Southern Transfer (T2ST). Further information, including RAPID Gate 1 and 2 reports, can be found on this link: https://www.ofwat.gov.uk/regulated-companies/rapid/the-rapid-gated-process/ This Prior Information Notice (PIN) is issued ahead of contract notices for the appointment of various partner opportunities, including but not limited to a Technical Partner (TP) and a Programme Partner (PP) to support TWUL's SROs. TWUL are issuing this PIN to provide potential bidders advanced notice of these procurement events. Each opportunity will be published under a separate contract notice. TWUL intends to award the first work packages immediately following the appointment of framework suppliers.

Thames Water wishes to award a number of framework agreements to suppliers capable of project design, building renovations, remedial works and/or the provision and maintenance of welfare cabins. Due to the varying age of buildings and structures within the Thames Water estate (over 400 sites across the TW supply area), there is need to carry out renovation and remedial works in order to ensure they remain safe and fit for purpose. The Framework Agreements will cover the following works: Consultancy (Project Design), Internal & External Works to operational and corporate buildings (London area), Internal & External Works to operational and corporate buildings (Thames Valley and Home Counties), Roofing, Asbestos Consulting, Asbestos Treatment and Welfare Cabins. Thames Water reserve the right to issue multiple awards for each lot in this agreement to achieve the most efficient and economical service solution whilst ensuring the security and consistent continuity of supply and delivery. Thames Water reserve the right to enter into a contract or contracts for the provision of all or any number of lots. In parallel, although on a slightly different timetable, Thames Water is also running a procurement exercise for facilities management services whereby there are some common areas of work with this procurement exercise. We expect to issue the notice early December 2025 with a response date 6 weeks after issue.

Thames Water Utilities Ltd (TWUL) is participating in a market engagement briefing event, on 20th October (morning) in London. The purpose of the event is to inform interested parties of the current proposals to deliver several reservoirs as part of the Strategic Resource Options (SROs) programme, including the Southeast Strategic Reservoir Option (SESRO), a new raw water storage reservoir in Oxfordshire - helping to build a resilient future in the long term. The purpose of this PIN is to give notice of the event, which is being organised by the Regulators' Alliance for Progressing Infrastructure Development (RAPID) and held in collaboration with Anglian Water, and to encourage interested parties to register their interest with RAPID. It is not a call for competition. TWUL will also be requesting that interested parties complete our Request for Information (RFI) after the event, to provide more detailed feedback on our emerging delivery proposals for SESRO. The event invite and subsequent RFI will be accessible through TWUL's eSourcing platform IASTA SmartSource. Please see Section VI.3 Additional Information on how to request access to the SESRO Market Engagement project. TWUL intends to use this event to introduce the project to the market and encourage interested parties to engage with us as we develop the project further, including through selective bilateral discussions to be held after the event, in order to explore RFI responses in greater depth. The objectives of the engagement half day are: * To introduce the SRO Programme, including SESRO and other reservoir schemes being developed by other water companies. * To explain the project's needs case, scope and key components / assets. * To introduce key considerations related to the commercial model and delivery strategies under consideration. * To provide an opportunity for interest parties to ask questions. * To identify parties who would be interested in engaging with us further after the event. To access the invite which includes a link to register your interest in attending the event with RAPID, please refer to Section VI.3 Additional Information.

Thames Water Utilities Limited (Thames Water) is pleased to announce its intention to publish a tender notice for the Major Projects Framework (Framework). This follows the successful preliminary market engagement process (Notice ID: 2025/S 000-037464), which invited suppliers to contribute to shaping the procurement strategy for this significant capital investment programme. The Framework will cover major works and asset upgrades across Thames Water's operational regions, with a focus on fostering long-term partnerships and reducing unnecessary bidding efforts. Contracts awarded under this Framework will include works, goods, and services essential to AMP8 delivery, with potential to extend into AMP9 based on performance. ITN Launch Event - 18 September 2025 To mark the transition from market engagement to formal procurement, Thames Water will host an Invitation to Negotiate (ITN) Launch Event on 18 September 2025. A detailed agenda will be provided to attendees closer to the time but it is anticipated that the event will include: • An overview of the opportunity • Outcomes of the Preliminary Market Engagement Phase • Procurement Process Summary: An overview of the procurement timeline and process • Contract Summary and details of the ITN documentation and submission requirements • Clarification on evaluation criteria and conditions of participation • Q&A: An opportunity for suppliers to ask questions and engage with the team. Suppliers who are interested in bidding as a Tier 1 Main Contractor (sole / JV / Consortium) are encouraged to attend this event to ensure they are fully informed and prepared to participate in the upcoming tender. If you intend to bid for this opportunity as part of a JV / Consortium, then we also encourage you to commence agreeing arrangements between the parties. This should be addressed ahead of the PSQ response deadline so that you can make your submission in the name of the JV / Consortium. Event Registration To register for the ITN Launch Event please complete the form by clicking on this link. Registration for the event closes at 12 noon on 12 September - https://forms.office.com/e/NwRum6CMbK Contact Information For further information or queries, please contact procurement.support.centre@thameswater.co.uk

This Periodic Indicative Notice (PIN) relates to a planned market engagement event that Thames Water Utilities Limited (TWUL) will host for suppliers at One New Change, London on Wednesday 24th January 2024 @ 10:30am. The event will introduce the proposed Teddington Direct River Abstraction (DRA) Project and current proposed thinking on the procurement and contracting strategy. Following the event, suppliers will be invited to take part in a market sounding exercise to provide feedback on our approach and express their interest in the project. The market sounding pack, including a briefing document and questionnaire, will be made available to all interested parties. Please follow this link - https://forms.office.com/e/WshK7AFE2X, to register your interest in attending the event. Additional information about the project can be found in subsequent sections of this PIN.