Im not familiar with the laws about the public parks so…
In the UK is it ok with you through a wire up the tree for an hour or so etc etc?
I want to test some antennas I made without going to a hill outside london. Im not going to do in on a crazy sunny Sunday but more like a normal weekend.
The closest park for me is Regents Park (NW1), just around the corner.
“To ensure everyone enjoys the parks fully, we ask that you refrain from the following:
…
Fixing anything to trees or driving anything into the ground.
Erecting tents, marquees or other structures…”