I'm pretty sure it's the one sold at Bonhams in Spring 2014 for £22,425 as it has the same home made bracket at the rear of the foot-board. It's a beauty but I would have just got it roadworthy and left it un-restored. Each to their own though.
Here's the Bonhams link: https://www.bonhams.com/auctions/21897/lot/197/
1939 600 OHV 4F, 1956 MKII Square Four, a Healey, 1939 OH 250, 1939 OG 250 plus a couple of OG250 projects, 1920 Ariel V twin project and a variety of lesser makes