Description CMDP, a Joint Venture between Costain and MWHT, have been selected by Southern Water to deliver essential infrastructure solutions for its next AMP8 investment 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. The strategic delivery partner 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. LI-SA1 Responsibilities Lead and develop the efficient and effective management and issue of accurate, timely and compliant notices and correspondence Ensure contractual and commercial risks and opportunities are identified to the Project Director/Manager Maintaining registers of variations, delay, extension times and claims, effective and consistent implementation of the Company's commercial policies and procedures. Assist with preparation of monthly progress valuations and claim for work completed. Liaise with Employers commercial team & client team Produce pre-Contract tender negotiations & reports where necessary Produce monthly cost reports, forecasts, and Contract Budget reports Review value management and advise on Risk management Prepare, review and complete of sub-contract documentation Plan change management and cost control Prepare & agree interim applications for payment Prepare & agree final accounts with sub contractor Manage subcontracts from initial placement of order to final account Monitor and update Procurement Plan, Sub-contract procurement including analysing commercial comparisons Reconcile weekly plant, material, labour reconciliation against budget