Hey Chris,
How long are you in london until? I've got some monkeying to do with my bike on sunday. If all goes well, I could make to the trip to london on Monday. It would have to be early in the afternoon, as I'd have to be back in T.O. before dark.
Aside from Monday, I could try to sneak off a holiday on Friday. No guarantees I'll be able too though because we're pretty busy at work right now. Next weekend also works for me.
Let me know what your schedules like.
Mike