UK "default on" ISP censoring will include "web forums" by default

No, well- hopefully, anyway.
But having an encrypted tunnel is probably enough to get them to want to take a better look at you- after all, if you had nothing to hide then you'd not be encrypting anything would you?

Good luck to them. I encrypt all the traffic from my phone now so I hope they do waste their time decrypting it.

Everyone who encrypts stuff is contributing to the noise:signal ratio for these pricks that think they can just monitor us for no good reason than their own political ends.