Retailer Measure of Experience (R-MeX)

The Retailer Measure of Experience (R-MeX) is a survey that provides a quantitative, as well as qualitative, measurement of wholesaler service to their retailer(s). It evolved from a Retailer Wholesaler Group (RWG) workstream, which began in August 2018, and is currently run twice a year. The survey consists of eight questions covering topics such as engagement, communication and data quality, asking retailers to provide a score between 0-10 with the option to provide additional feedback via an open text field.


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The first league table below outlines the average score received by each wholesaler reviewed across seven areas, in the October 2023 survey. These areas correspond to the seven areas with a rating score. The table is ranked by ‘Overall Service’. The second table shows the movement of the average scores between the February 2023 and October 2023 surveys. 

October 2023

A table ranking wholesalers based on retailer scores in the October 2023 R-MeX. Affinity is ranked the highest (8.77 overall service) and Thames Water is ranked the lowest (6.79 overall service).

 Variation October 2023 v February 2023

Table showing variations in wholesaler rankings for the October 2023 R-MeX versus the February 2023 R-MeX. Anglian Water has increased by five positions to 5th, and South West Water and Southern Water have decreased by four positions to 7th and 10th respectively.


Dates for upcoming surveys

Please find the dates for upcoming R-MeX surveys below. These are subject to change, and are available in the Market Requests Calendar

Year Dates


#1: February (Cancelled)

#2: August (Four week duration, 5th - 30th)


#1: February (Four week duration, date TBC)

#2: August (Four week duration, date TBC)

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