Thanks - problem is that I've searched, but no suppliers seem to have been doing signups other than Octopus (who I can't use as I don't have a compatible car),

Thanks - problem is that I've searched, but no suppliers seem to have been doing signups other than Octopus (who I can't use as I don't have a compatible car), and I hadn't seen British Gas until last night. They are doing a 42p/10p off-peak deal which will save me about £20 a week altogether, so thanks for nudging me to have another look.