We have a large space to heat with very little available wall space.

I've had a look for vertical rads and not really found any "normal"
ones, and I'm not inclined to spend a fortune on a designer one,
particularly when it doesn't have the BTUs required to heat the space.

So is it possible to mount a standard horizontal radiator vertically
(with both valves running vertically downwards on the bottom (ie. what
would ordinarily be one side of the rad) or does that come under the
heading of Really Stupid Idea? (And if so, why?)

It would be great if I could just take this 300x1200 rad from Screwfix...

http://www.screwfix.com/app/sfd/cat/...66312&id=21132

.... and turn it through 90 degrees, but life's not that simple, is it???