Peculiar - just seen a Lewisham bound P4 exit the 172/Chandos loops, go through the lights and stop at Stondon Park. The website still say that Stondon Park and Maclean Rd are missed - though I can't see why a bus exiting the Cjhandoes loop wouldn't stop at Stondon Park (after all the 172 does).

Possibly whoever put the disruption notice together didn't understand the road layout; or maybe the P4 bus driver didn't understand the "disruption route"!