That sparked a synapse somewhere in the little grey cells. When one was a baby pilot in Yorkshire (late 60s), there were big metal rings set into the Dishforth dispersals, presumably the remains of those are what are visible.
We were told they had been used in the past for tethering Beverleys which were too big for the hangars. Don't think I've though about it since, but had a quick check of the records and see that No 30 Sqn flew Bevs at Dishforth for a couple of years (1957-9??) before deploying to Kenya (Eastleigh).
Circumstantial evidence, but that's my first shot .........