Costain Group PLC

16 August 2024

Costain and MWH Treatment joint venture CMDP+ wins AMP8 framework with Southern Water

Win marks Costain's latest major AMP8 award for 2024

Costain Group PLC ("Costain") announces that its CMDP+ joint venture with MWH Treatment has been selected by Southern Water to shape and deliver its next strategic asset upgrade programme.

The award is for an initial seven-year term worth at least £500m to Costain, with an option to extend by up to five years.

CMDP+ has successfully secured a place on two Lots of the new Strategic Delivery Partner framework, and the joint venture continues the long-standing relationship between Costain, MWH Treatment and Southern Water. The framework will deliver upgrades to water and wastewater assets, including treatment sites, pumping stations and reservoirs, during Asset Management Period 8 (AMP8) and beyond. Southern Water expects that its AMP8 programme, which runs from 2025 to 2030, will be the largest it has ever undertaken.

Costain has worked successfully with Southern Water through every asset management investment period since 2000.

Alex Vaughan, CEO, Costain, commented: "This AMP8 announcement builds on our growing positions with the leading water companies as they prepare for a nationally important period of record investment.

"This framework marks three decades of delivering industry leading essential solutions for Southern Water. Through our successful joint venture with MWH Treatment, we will upgrade water and wastewater services for Southern Water and its customers, safeguarding the environment, and securing water supplies across the region; as well as creating new jobs and added social value."

Enquiries:

Investors and analysts                                                                   paul.sharma@costain.com

Paul Sharma, Costain                                                                      +44 (0) 7867 501188

Financial media - Headland                                                          costain@headlandconsultancy.com

Andy Rivett-Carnac                                                                         +44 (0) 7968 997 365

Charlie Twigg                                                                                   +44 (0) 7946 494 568

Notes to editors

Costain helps to improve people's lives by creating connected, sustainable infrastructure that enables people and the planet to thrive. We shape, create and deliver pioneering solutions that transform the performance of the infrastructure ecosystem across the UK's transport, energy, water, and defence markets.

We are organised around our customers anticipating and solving their challenges and helping to improve performance. By bringing together our unique mix of construction, consulting and digital experts we engineer and deliver sustainable, efficient and practical solutions.