[Reason077]

There's some good ones in central London. The C2, C3, C6, etc. Wide segregated routes, fully signalised at intersections so turning traffic doesn't cross the cycle lane, etc. I'm not so familiar with South London but some boroughs are better at doing cycling than others. eg: Hackney and Camden very good. Kensington & Chelsea very bad.

[nicolapede]

I agree -- there is a lot of variability depending on boroughs. Hope they will extend the good practices more and more.