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    Kier’s £44.4M Southern Water AMP8 design win: scope and risks for civil teams

    December 5, 2025|

    Reviewed by Tom Sullivan

    Kier’s £44.4M Southern Water AMP8 design win: scope and risks for civil teams

    First reported on New Civil Engineer

    30 Second Briefing

    Kier has secured two Early Contractor Involvement design contracts with Southern Water worth a combined £44.4M under the AMP8 delivery programme, targeting capacity increases and environmental performance upgrades across the utility’s wastewater and water treatment assets. The work will focus on front-end design for process optimisation, hydraulic capacity improvements and compliance with tighter discharge and water quality standards due in AMP8. For civil and geotechnical teams, this signals upcoming packages for new or expanded treatment structures, associated earthworks and below-ground infrastructure in Southern Water’s region.

    Technical Brief

    • Two ECI design commissions together are valued at £44.4M under Southern Water’s AMP8 framework.
    • Contracts are additional to earlier AMP8 appointments, consolidating Kier’s role in Southern Water’s capital programme.
    • Scope is limited to early-stage design, with separate future tenders expected for main construction works.
    • ECI phase will define buildability, staging and outage constraints for later wastewater and water treatment upgrades.
    • Design packages are expected to cover both above-ground process units and buried pipelines, tanks and structures.
    • For other UK utilities, the award reinforces ECI as the preferred route for complex AMP-period upgrades.

    Our Take

    These Southern Water NEC4 packages sit within the £3.1bn AMP8 strategic delivery partner framework flagged in our other coverage, signalling that Kier’s water business is locking in a multi-year workload rather than isolated jobs in the UK utilities sector.

    Kier’s appointment of a new CFO from logistics operator Wincanton, reported in a separate piece, suggests the group is trying to pair balance-sheet discipline with operational delivery as it takes on complex UK water-environment upgrades under AMP8.

    Within our 171 Infrastructure stories, Kier appears frequently on UK public-utility frameworks, indicating it is consolidating a position as a go-to contractor for regulated water and environmental compliance work rather than purely transport-led projects.

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    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.

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