Our complaints performance

The total number of complaints received during January, Febuary and March (Q1 2023) was 10,8573. This is an increase in complaints compared to those received in Q4 2022 (10,4609). 

Through our complaints improvement programme, we’ve continued to look at the causes of customer dissatisfaction. We’ve then addressed these causes by making improvements to our systems and processes. We will continue making positive changes throughout 2023 and beyond. 

Complaints received and resolved

The table below shows how many complaints we’ve received and resolved in Q1 (1 January - 31 March 2023)

Number of complaints received108,573
Number of complaints received per 100,000 customer accounts1,965 
Number of complaints resolved*101,823
Number of complaints resolved per 100,000 customer accounts1,843
Percentage of complaints resolved by the end of the next working day52.52%
Percentage of complaints resolved within 8 weeks89.98%

*This includes complaints resolved which were raised in previous quarters.  

Help and advice

Complaints categories

Our complaints are divided by category, shown below:

Top 5 categories in Q1 2023% of complaints opened by category
Metering (Inc Prepayment)






Customer Service


Change of Supplier




This covers any complaints made about the layout of our bills as well as any information displayed on them such as cancelled charges or payment dates. Complaints received about estimated readings, price increases or incorrect bills are also included.


Any complaints we receive about Direct Debit payments or prepayment credits are included here. 

Customer services

This includes complaints made about the Customer Service that we offer.

Metering (inc. prepayment)

If we receive complaints about metering appointments or any mismatched data then these are listed in this section. Also included here are prepayment meter issues, which tend to be higher in winter months. 

Change of supplier

This covers any complaints made about our collection activities relating to overdue bills or repayment plans.