| Characteristic | EDF Energy | OVO | British Gas | E.ON | ScottishPower | Bulb | Octopus Energy | npower* | SSE** |
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Source
Release date
June 2025
Region
United Kingdom (Great Britain)
Survey time period
Q1 2013 to Q1 2025
Supplementary notes
* npower was acquired by E.ON in 2020.
** SSE's retail business was acquired by OVO in January 2020.
Energy suppliers in the United Kingdom are required to provide quarterly figures detailing the number of complaints they have received, as well as publishing the top five reasons for complaints.
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