Any shops in London selling gumwall tyres?

If this is for the Pinarello get 700x23, only time triallists dick about with 700x20.

You're options are limited either way, Deda Tre RS Corsas are available with tan sidewalls (and available in Condor) or you can get a range of Veloflex tyres with them too.

Yep

They've got Conti Grand Prix on there at the mo and feels great, lovin the 20's shame they're now discontinued :-(

I'll check Condor