RIBBLE
I feel your pain though. I'm 6'5" with a 35' inside leg. Finding bikes to test ride is nigh on impossible, finding bikes 'off the peg' is equally difficult IME.
Buying second hand bikes is painstaking as
a) they don't come up for sale as much so you have be very patient and
b) when they do they fetch good money
It's right about
Evans as well. £50 deposit and they'll order any bike in for you, build it, and let you test ride it. If you aren't happy for ANY reason, get your money back and walk away.
FWIW I ride a 60cm Cannondale CAAD10 with a slightly longer stem, but they also do the CAAD10 in a 63, but I don't know how easy one would be too source.
I've just sold a 62cm
Ribble as well, great bikes TBH, check them out in the link above. Very customisable using their bike builder function.
I've also just ordered a 61cm Felt Feather fixed gear bike, (from Evans), I'll be testing that next week, and getting my money back if I'm not happy.
The bikes are out there, but they can be hard to find, and as Noodely says, the transition from 2012 bikes to 2013 bikes will be having an impact.
I was all set to buy a 2012 Specialized Langster last week, but I can't get one my size and they are now discontinued. I've seen the 2013 bike, (due out early September), but I don't like it. That's how I came to find the Felt I've ordered.
Keep going, check out Ribble, they are great bikes. Their customer service has come in for a fair amount of stick over the years, but TBH I've never had any issues with them. If you can get to their unit at Bamber Bridge near Preston they have a fitting rig there as well