This is an exciting new development! I really enjoyed reading your article and hadn't realised you have an exhibition coming up as well!
I've never heard of a Roman fort up there, interesting!
I don't think it's within the area you're investigating, but yesterday I noticed 2-3 ancient (possibly 'boundary') oaks at the bottom of One Tree Hill woods (on the informal path parallel with Brenchley Gardens).
Thank you for all your work on the local area. The survival of plants over time is very interesting. I'm fascinated by the patches of what used to be grass, which (since taking the pummelling of being walked and jogged on so much during lockdown) are now inhabited by thick little weeds.