Well blow me down! And well done there indeed.
The Benny Hill site was a hospital as well, I'm pretty sure the main building was listed as was the tree. I think they were converting the old hospital into flats. So how about getting a plaque put up there, preferably on the tree? From memory I think it had a circular wooden bench around it but don't know if still there or not, I was only there for a day. But the tree certainly should be unless someone appealed the order and got it down, I do hope not! I'd be happy to pay or contribute for a plaque being made if that was an issue, lemme know, because that show and that particular scene gave me and many others so much pleasure. Might need to google that one later, hmm.
BTW great to see G&S together there and obviously taken back to those days where it all began, by complete chance, a stroke of fate, both quite ill with TB and finding a shared interest and a shared talent in comedy, helped by the clean air of Hascombe and an old valve wireless they hardly ever turned off apparently. Deserves a TV bio drama if not already been done, oh yes. That's where they developed their famous writing method, one of them, I think Galton, lying on the floor with his eyes shut, Simpson at the writing desk bouncing ideas off Galton and jotting down whatever they came up with. Glory!