The cheapest and least disruptive way to sort the bottleneck was the one planned by the Department of Transport in the good old days before we had TfL. That plan was to divert the A406 from Bowes Road across the recreation ground behind the row of shops on the north side of the road and then curve back again into Telford Road.

I'm quite sure that eventually London will have a sensible, responsible Mayor who recognises that London's roads have to function properly and who will consequently make sure that this section of the A406 is improved accordingly. How long we have to wait for that sensible, responsible Mayor is anyone's guess.