"Ian Stirling" wrote in message
...
The boiler is at the moment in the toilet (no bath, small).
As some time in the dim and distant future, I'd like to make this a wet
room,
so having the boiler in would be awkward.

As a new boiler is to be fitted, is there any reason or legislation
(scotland) why moving it to the attic would cause a problem?

The building regs do limit where the flue can go (part J diagram 3.4 in
England) but nothing too restrictive.