Genius work from Marcus Tyler who went out with his camera to recreate the photo. As for location, that must be QED.
A head of steam also brewing for restaging the race to coincide with the Wanstead Fringe. Organiser/co-ordinator now sought. Contact wansteadium@gmail.com.
Also use that address if you have old photos of Wanstead you’d share here. This has been fun.