Just because you want a single-speed wheel, I would suggest you go to somewhere in town before heading south-east. If you're coming through King's Cross down to London Bridge for Blackheath, you could try Condor, they should have half-decent wheels ready built. About ten mins walk from King's X. Ring them to check mind.
Or just wait for the forum to provide ... by keeping the conversation going til someone who can help sees it.
SE london is rubbish for bikeshops. Seriously.
Just because you want a single-speed wheel, I would suggest you go to somewhere in town before heading south-east. If you're coming through King's Cross down to London Bridge for Blackheath, you could try Condor, they should have half-decent wheels ready built. About ten mins walk from King's X. Ring them to check mind.
Or just wait for the forum to provide ... by keeping the conversation going til someone who can help sees it.