I don't know what the tree is Jennifer I suspect you maybe right. The only sign I saw was telling people not to go in the fenced area in case they get a branch on their bonce.
Nice shot of the tower Roger, I regularly visited Portsmouth at the time the tower was being constructed. Must admit to not being sure about it but having seen it completed I think it is a great sight as you enter the harbour.
A spinnaker is the large sail on the front of yachts when racing. I am sure the sailors amongst us can explain better and show us a picture.
I bet that took a few poles Mal. One of your jobs?