TfL's JP tries to do too many things, and its main purpose is still public transport journey planning.
I've found the Tfl public transport planner comes up with pretty nuts suggestions the majority of the time...
@Joe_Wang started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
I've found the Tfl public transport planner comes up with pretty nuts suggestions the majority of the time...