There is (or "was" as I've now removed it) an entry in the database for Sainsbury's Energy which says "by EDF Energy":
Sainsburys Energy 0191 522 1109 0800 0511646 Customer service options Also: 0800 051 1655 by EDF Energy
The
Terms & Conditions says:
Quote:With effect from the 8th February 2011 the partnership between Sainsbury's Energy and EDF Energy will come to an end. Any customers who have signed up to Sainsbury’s Energy prior to this date will continue to be customers of EDF Energy. EDF Energy customers will no longer be able to collect Nectar points with their energy or benefit from future Sainsbury's Energy offers. For any existing customer who wish to manage their account please call 0800 068 8252
Sainsbury’s Energy in partnership with British Gas launched on 9th February 2011. Any customers who wish to continue collecting Nectar points with their energy or benefit from future Sainsburys Energy offers should contact us on 0800 316 0 316
There was also another entry which I've now removed:
Scottish Power 0845 272 7070 0141 568 6806 Customer services; also for Sainsburys Energy