i have no experience of these guys, but by instinct is against it. there is a shop on chancery Lane which does made to measure suits (i.e. not fully bespoke, but light years ahead of off the peg) for about £400. Thye have an offer on at the moment (walked past it today).

I should say that I have had a made to measure suit from this shop (can't remember the name off the top of my head)... and it was great