Would it? What would be the impact of changing the No Entry to a No Right Turn?

OK on the downside it would mean more passing traffic for 1 - 18 Manor Mount;

on the plus side: 1) easier access to the town centre car park (the council says it wants to invigorate the High St); 2) less waiting time for passengers on P4 bus waiting in the queue on Honor Oak Road to turn right into London Road; 3) reduced traffic on Devonshire Road, Woodcombe Crescent, Ewelme Road, Benson Road, and Tyson Road.

Of course it is speculation until the Council actually does some impact assessments and trials, which they seem uninterested in doing.

Apologies to Honor Oak folk for going off topic.