As Easy As Riding A Bike)
The best of the new cycling infrastructure in London is almost entirely composed of bi-directional cycleways, placed on one side of the road. This includes pretty much the entirety of CS3 and CS6 – the former running from Parliament Square to Tower Hill, the latter from Elephant and Castle to just north of Ludgate Circus.
Bi-directional cycleways are often not the best design solution, but the decision to go with bi-directional cycleways is not an accident. Undoubtedly people at Transport for London have thought long and hard about the best way to implement cycling infrastructure given current UK constraints, and have plumped for two-way as the most sensible approach.