Business Customer Measure of Experience (B-MeX)
The Business Customer Measure of Experience (B-MeX) is a survey that provides a quantitative measurement of wholesaler service to their business customers. It was introduced by Ofwat in PR24 with the introduction of the Business Customer and Retailer Measure of Experience (BR-MeX) metric. Since its introduction in April 2025, the survey has been run each month by Accent Marketing and Research Limited who share the results with wholesalers and MOSL each quarter.
As of 1 April 2025, the B-MeX survey makes up 50% of the Business Customer and Retailer Measure of Experience Survey – find out more on the BR-MeX webpage.
Quarterly results
The below table outlines the score received by each wholesaler following the first quarters surveys (April 2025 - June 2025). Each quarter, the below will be updated to show the latest figures and re-ordered dependant on the results. The Overall Results will be used by Ofwat within their BR-MeX calculations.
To view this table in Excel format click here