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 periodic review PR24 alongside 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 table below outlines wholesalers' results from the Q2 2025/26 survey of business customers.
The table below will be updated each quarter to show the latest figures, re-ordered dependant on the results. The Overall Results will be used by Ofwat in its BR-MeX calculations.
View an Excel version of this table