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Southern Water Services (SWS) is anticipating that AMP8 will be the largest investment programme it has ever undertaken, given its plans for WINEP and WRMP, and the service it is seeking to deliver for customers. SWS now wishes to secure a range of supply chain partners for the delivery of its AMP8 capital programme. The AMP8 regulatory period will run from April 2025 to March 2030. The current frameworks used for engineering, design and construction services have been in place for almost 10 years and expire on 31st March 2025. In procuring new frameworks, we are seeking to build on positive changes made in AMP7, but also to look beyond AMP8 and take important steps to reflect supplier feedback, moving towards excellence in all that we do. The new arrangements will offer the option of running for AMP9.
In parallel to this procurement process, Southern Water is working up its plans for PR24 – including working with our regulators and stakeholders to confirm the investment that will be available, and the capital delivery projects that will need to be undertaken. The PR24 process will benefit from having the AMP8 supply chain in place to assist with ongoing planning and transition to AMP8.
A collaborative framework for the delivery of strategic programmes, including; strategic planning, outline design, detailed design and build
The scope of the framework is anticipated to be as follows:
Services across the Client’s geographical region including Isle Of Wight (IOW).
This is intended to be used for a Strategic Delivery Partner working across the Asset Lifecycle Process providing strategic planning, design, construction management services and expertise.
Identify and develop options in accordance with the Client’s technical and engineering standards for all aspects of Water, Wastewater and Infrastructure systems.
Achieve the required asset performance or customer outcomes by identifying:
low build or no-build solutions.
sustainable including low carbon, catchment, and nature-based solutions.
lowest Totex or Best Value solutions across an agreed Tranche or Programme of works.
how the solution(s) deliver benefit as measured through the Client’s Balanced Scorecard, and at an aggregate catchment or system level.
| Supplier | Identifier | Award Value | Lots Won | Cross-References |
|---|---|---|---|---|
| COSTAIN LIMITED | 00610201 | ~£1,949,000,000 estimated from lot values | 1 lot Capital SDP Non-Infrastructure Water | LOBBYIST Bradshaw Advisory Ltd (1 quarter) Headland Consultancy Limited (1 quarter) |
| Galliford Try Construction Limited | 02472080 | ~£2,772,000,000 estimated from lot values | 1 lot Capital SDP Non-Infrastructure Wastewater | - |
| Kier Integrated Services Limited | 00873179 | ~£2,772,000,000 estimated from lot values | 1 lot Capital SDP Non-Infrastructure Wastewater | - |
| Morrison Water Services Limited | 04530602 | - | - | - |
| MWH TREATMENT LIMITED | 01535477 | ~£1,949,000,000 estimated from lot values | 1 lot Capital SDP Non-Infrastructure Water | - |
This procurement was divided into 3 lots, each awarded separately. 15 bids were received in total.
| Lot | Value | Bids Received | Awarded To | Status |
|---|---|---|---|---|
| Lot 1 Capital SDP Non-Infrastructure Water 2,520 days (≈6.9 yrs) | £1,949,000,000 £1,881,833,333 initial term | - | COSTAIN LIMITED MWH TREATMENT LIMITED | active |
| Lot 2 Capital SDP Non-Infrastructure Wastewater 2,520 days (≈6.9 yrs) | £2,772,000,000 £2,789,166,667 initial term | 4 | Kier Integrated Services Limited Galliford Try Construction Limited | active |
| Lot 3 Capital SDP Infrastructure Water & Wastewater 2,520 days (≈6.9 yrs) | £1,524,000,000 | - | - | cancelled |
Weightings from the notice, applied to every lot.
Government spending data: These suppliers have received £4,101,980,051 in 7,187 payments (over £25k) from Department for Transport, Department for Education, DEFRA, HMPPS, Home Office and 16 more public bodies (2012-06-07 to 2026-07-08).