Thanks, I'll pass it to Dook if he wants it as he suggested Fearn. Fearn was actually my first thought seeing the design of the tower but looking at Fearn on GE the overhead didn't fit so I dismissed it without actually looking at the tower. I'd looked for Godwit, based on it being a RNAS a long way from the sea and couldn't find it so had given up on it until Dook posted Fearn and i googled a picture of the Tower and then searched for towers of the same design. It's not easy to find as it's not where most of the links say it is.
Over to Dook or otherwise OH.