[peanut]

I've pretty much done all I can to insulate our place. The bedroom doesn't get heated as much as prefer it to be a lot cooler, so I've isolated the bedroom from the rest of the flat as best as possible.

So basically, it'll cost a bit more to keep it at 23c. We're not going to freeze at 20c so can put up with a bit of a temp difference for an hour or so and can put the boiler on a timer anyway.

Thanks for all the helpful advice.