Question to the Department for Business, Energy and Industrial Strategy:

To ask the Secretary of State for Business, Energy and Industrial Strategy, how many and which (a) electricity and (b) gas supply companies are registered with Ofgem.

As of December 2017 there were a total of 69 domestic energy supply companies registered by Ofgem. This included 7 supplying gas only, 5 supplying electricity only and 57 supplying both electricity and gas. A full list of licenced electricity suppliers can be found here:

https://www.ofgem.gov.uk/publications-and-updates/list-all-electricity-licensees-registered-or-service-addresses

A full list of licenced gas suppliers can be found here:

https://www.ofgem.gov.uk/publications-and-updates/list-all-gas-licensees-registered-or-service-addresses