Sound like you need a "Boston Film Party!"
All British photographers should stage a mass "Public Space" photography shoo-in to demonstrate. Then at the end throw your film into the harbor (harbour).
Next the "authorities" will march their "troops" against you to Lexington and Concord.
You have nothing to fear but fear itself.
Politicians really need to find real work. Your Labour Party sounds a lot iike our Loony Republican Party. Which is an observation worth laughing about. Liberals and Conservatives united will always be defeated. Ha ha ha ha.