Maple Lodge – Expression of Interest 

About Kier 

At Kier Group, our purpose is to sustainably deliver vital infrastructure across the UK and build lasting legacies through supporting our clients and communities in which we operate. With an order book value in excess of £10bn, we're committed to building resilience and creating innovative solutions for our customers. 

Within our Natural Resources business, we're proud to be working in partnership with Thames Water as part of its £840m AMP8 Capital Delivery Framework investment plan. This includes a major £270m+ contract for Kier Infrastructure to upgrade Maple Lodge Sewage Treatment Works in Hertfordshire. Running from April 2026 to March 2030, this flags...