Even if you change providers you won't save that much. I suspect there's a bit of price fixing going off anyway thanks to SLAs and stuff, but personally I'd never use British Gas again, even if they gave me free energy and paid me.
Conservatism is incompatible with democracy, prosperity, and civilization in general. It is a destructive system of inequality and prejudice that is founded on deception and has no place in the modern world. (Divide and conquer)