Bike porn

http://www.jonnycycles.com/
unfortunately you missed the boat by about a year.
no longer builds frames, you probably couldn't have afforded on anyway ;)

then again, i'm sure if you took that pic to someone who knew their craft i'm sure they'd be able to make you that bar/stem combo no trouble at all. the original hammerhead was a bargin at only $250 so theres bound to be someone in the uk who could do it cheaper.

Robin Mather come to mind, as well as Hufnagel (US) and Carrion Cycle Works, that's as far as I know thought.

(Carrion Cycle Work stem/bar).