Wholesaler/Retailer Risk Allocation Model

The Water Services Regulation Authority (Ofwat) engaged Cubelynx Limited to undertake modelling work producing quantitative models of costs and risks associated with different credit and collateral arrangements in the business retail market for water services. The contract, valued at £35,000 and completed in November 2025, required the supplier to review the 2016 credit support cost model, develop payment timeline analysis, create Excel models for retailer and wholesaler cost/risk impacts under various credit options, and produce accompanying guidance documentation suitable for publication on the Ofwat website.