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M&S Energy is unavailable in the Channel Islands, Isle of Man, Ireland and Northern Ireland. Terms and conditions apply.

M&S Energy is supplied under SSE and associated brands: Southern Electric; Scottish Hydro and SWALEC which are all trading names of SSE Energy Supply Limited Registered in England & Wales No. 03757502 and Southern Electric Gas Limited Registered in England & Wales No. 02716495, both members of the SSE Group. The Registered Office of SSE Energy Supply Limited and Southern Electric Gas Limited is 55 Vastern Road Reading Berkshire RG1 8BU. Marks and Spencer plc. Registered Office: Waterside House 35 North Wharf Road London W2 1NW. Registered in England & Wales No. 0214436.