...Bra itch is so annoying. :/
Not sure if you can order from the UK <edit> (they have a UK site!) </edit>, but my
Maidenform bras are by farrrrrrrrr the most comfortable. A friend of mine told me about this place a few years ago, and I absolutely love them. ^.^ They are much more comfortable than far more expensive bras I own.
My only complaint is the recent implementation of the backorder system. You can order items that aren't currently in stock, and sometimes those items have been discontinued.

They always promptly return any money spent on the aforementioned, though.