Award

Wholesaler/Retailer Risk Allocation Model

THE WATER SERVICES REGULATION AUTHORITY

This public procurement record has 2 releases in its history.

ContractAmendment

22 Apr 2026 at 15:00

Award

13 Feb 2026 at 16:01

Summary of the contracting process

The Water Services Regulation Authority, commonly known as Ofwat, is the buying organisation overseeing the contracting process for the Wholesaler/Retailer Risk Allocation Model. This public procurement falls under the industry category of business and management consultancy services and encompasses regions across the United Kingdom. The procurement process has reached the contract amendment stage as of 22nd April 2026. The initial contract was awarded to Cubelynx Limited, a small to medium-sized enterprise based in London, with contract periods extending from 28th November 2025 to 21st August 2026. The procurement was conducted using a direct method below the threshold, without competition, in accordance with various regulatory requirements under the Procurement Act 2023.

This tender offers a strategic opportunity for businesses specialising in business consultancy and risk modelling. Enterprises that can produce comprehensive quantitative models of costs and risks, particularly relating to credit and collateral arrangements in the business retail market, will find this tender pertinent. Engaging with Ofwat and producing robust models that could be published for external review can bolster a company’s reputation and portfolio in regulatory compliance and strategic modelling sectors. Small to medium-sized enterprises with expertise in developing and documenting sophisticated financial models are particularly well-suited to participate in such procurements and potentially enhance their market growth by collaborating with a central government public authority like Ofwat.

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Notice Title

Wholesaler/Retailer Risk Allocation Model

Notice Description

Undertake modelling work and produce quantitative models of the costs and risks of different credit and collateral arrangements in the business retail market, together with supporting documentation. The Supplier shall provide the following Deliverables to the Customer as part of the Services: (1) Review the 2016 model of credit support costs to understand principal inputs, outputs and parameters, taking into account any relevant feedback Ofwat may have received regarding that modelling and updates to the modelling documentation. This shall be a Word document. (2) Develop and produce an understanding of prepayment and post payment timelines regarding Retailer payments to Wholesalers, as specified under the Wholesaler Retailer Code The Supplier shall provide the following Deliverables to the Customer as part of the Services: (1) Review the 2016 model of credit support costs to understand principal inputs, outputs and parameters, taking into account any relevant feedback Ofwat may have received regarding that modelling and updates to the modelling documentation. This shall be a Word document. (2) Develop and produce an understanding of prepayment and post payment timelines regarding Retailer payments to Wholesalers, as specified under the Wholesaler Retailer Code (WRC) business terms (WRC Schedule 1 Part 2 Business terms SS9 Billing and terms of payment - Available at: Market Codes - MOSL). (3) Develop and produce a quantitative model of impacts on and costs for a Retailer of providing different levels of collateral, under the payment timetables established in step (2). Principal costs should include the costs working capital and collateral. Modelling work should include sensitivities to four credit options. This shall be an Excel model. (4) Develop and produce a quantitative model of risk exposure and costs for a Wholesaler under different credit options. Sensitivities should include Retailer collateral provided as a proportion of a Wholesaler's total exposure, probability of Retailer default, and four credit options. This shall be an Excel model. (5) Write guidance documentation to explain and accompany both models, with a view to enabling external stakeholders and interested parties to understand and comment on the models and modelling assumptions. This shall be a Word document. Modelling work is to be carried in collaboration with Ofwat and relevant interim support. The quantitative models must be of a sufficient standard and robustness to be published on the Ofwat website.

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-065444
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/036762-2026
Current Stage
Award
All Stages
Award

Procurement Classification

Notice Type
UK10 - Contract Change Notice
Procurement Type
Standard
Procurement Category
Services
Procurement Method
Direct
Procurement Method Details
Below threshold - without competition
Tender Suitability
Not specified
Awardee Scale
SME

Common Procurement Vocabulary (CPV)

CPV Divisions

79 - Business services: law, marketing, consulting, recruitment, printing and security


CPV Codes

79400000 - Business and management consultancy and related services

Notice Value(s)

Tender Value
Not specified
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
£74,850 Under £100K

Notice Dates

Publication Date
22 Apr 20262 days ago
Submission Deadline
Not specified
Future Notice Date
Not specified
Award Date
19 Nov 20255 months ago
Contract Period
31 Mar 2026 - 21 Aug 2026 1-6 months
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Complete
Awards Status
Active
Contracts Status
Active

Contracting Authority (Buyer)

Main Buyer
THE WATER SERVICES REGULATION AUTHORITY
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
BIRMINGHAM
Postcode
B5 4UA
Post Town
Birmingham
Country
England

Major Region (ITL 1)
TLG West Midlands (England)
Basic Region (ITL 2)
TLG3 West Midlands
Small Region (ITL 3)
TLG31 Birmingham
Delivery Location
Not specified

Local Authority
Birmingham
Electoral Ward
Ladywood
Westminster Constituency
Birmingham Ladywood

Supplier Information

Number of Suppliers
1
Supplier Name

CUBELYNX

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.

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