Yep, I certainly will, in fact I have started already by turning on one of my over-night heaters and have started using my electric blanket again. I do feel the cold a lot and I hate it.
Of course it is no surprise that all the major providers will be increasing their profits, not a lot we can do about it, and they know that! People may say 'Switch', but what's the point when they will all be increasing the prices as usual.
Anyway, I had a recent windfall on UK lottery, so I will be fine, at least for this winter - will probably have spent it all by the following winter.