Thanks for your reply twee,

I got my figures by doing a comparison on this site, Im very dubious about fixed price deals because I do think prices will come back down eventually, also to go on for example british gas fixed price 2011, for it to become cost effective prices would have to rise by another 52% thats pricy in my eyes. also my original question was whether dual fuel is the way forward as at this moment in time it would be more cost effective to get my 2 fuels from different suppliers?