Kier’s £44m Southern Water AMP8 packages: design and process notes for engineers
Reviewed by Tom Sullivan
First reported on The Construction Index
30 Second Briefing
Kier has secured two NEC4 Engineering and Construction Contract packages worth £44.4m to upgrade 12 Southern Water wastewater treatment works under the £3.1bn AMP8 strategic delivery partner framework. A £19.9m ECI contract covers early-stage design and development at six sites including Chickenhall (Eastleigh), Fullerton and Paddock Wood to increase capacity and meet WINEP-driven environmental and population requirements. A second £24.5m ECI contract covers six further works such as Tonbridge and Felbridge, focusing on process upgrades for tighter ammonia, phosphorus and BOD removal performance.
Technical Brief
- First £19.9m package clusters six works (Chickenhall, Fullerton, Leeds, Newnham Valley, Paddock Wood, Sellindge) for coordinated capacity and compliance design.
- Second £24.5m package groups Dambridge, Felbridge, Staplehurst, Ticehurst, Tonbridge and Ulcombe for integrated process upgrade planning.
Our Take
Kier’s role on Southern Water’s AMP8 WINEP work sits alongside corporate-level change, with a new Kier Group CFO due in January 2026, which suggests the water frameworks will be a key earnings and cashflow anchor through that leadership transition.
Within our 120 Infrastructure stories, Kier appears frequently on regulated-utility frameworks, indicating that the company is consolidating a niche in long-duration UK water and power network programmes rather than one-off civils jobs.
The £3.1bn AMP8 strategic delivery partner framework that underpins these Chickenhall and Kent schemes signals that Southern Water is likely to batch further NEC4 packages of similar scale, giving Kier Natural Resources, Nuclear & Networks a visible pipeline for specialist process and network upgrades across the region.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
