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

To ask the Secretary of State for Business, Energy and Industrial Strategy, what information his Department holds on the profit margin for customers of (a) British Gas, (b) EDF, (c) E.on, (d) Npower, (e) Scottish Power and (f) SSE on the standard variable tariff.

The Department does not hold information on the profit margin for customers of energy suppliers on the standard variable tariff.