urban75 forums
Much of the TfL road network has already been made 20, including everything inside the congestion charge zone in 2020. Lots more coming this year including (of interest to citizens of this parish) the A23 as far south as Norbury, the A24 all the way to Colliers Wood, all of Old Kent Road and Peckham Road and Lewisham Way, oh and the South Circular between Clapham and Lewisham. A bunch in North London too, if that's of interest to you. It's a lot of big roads getting slowed down 
Assuming it's enforced....
Details here: Lowering Speed Limits
I blended the North and South London overview maps. North London stuff already being implemented, South London bits still in consultation, but it'll happen.
Assuming it's enforced....
Details here: Lowering Speed Limits
I blended the North and South London overview maps. North London stuff already being implemented, South London bits still in consultation, but it'll happen.