Folded bicycles: Free of charge on the tube at all times.
Non-folding bicycles: Free of charge on some sections of the tube outside peak times. Peak times: 07.30 - 09.30 and 16.00 - 19.00, Monday to Friday, except public holidays.
Non-folding bicycles: During peak hours in the opposite direction to the majority of travelers on some routes. This includes the Northern Line near Middlesex University:
The same rules apply to DLR (except Bank station), most Overground services and TfL Rail.
River services also take bikes, as does the Emirates Air Line.
Cyclestreets will suggest a quietest route, a balanced route and a fastest route. Use as a guide to finding routes you may not have thought of.