I also don't think it would take the UK too long to block sites like what you're describing. It's now totally doable that ISPs would run non-whitelisted websites through an AI screening before serving them to the user. Or they might choose to go after individuals accessing them multiple times, as repressive governments go after individuals possessing/viewing politically "harmful" material.
Do you think I could get them to send me a certificate and everything?
I'm sure someone could whip up some merch super quickly as souvenirs/protest
The King. Sorry to spoil The Crown for you, but Queen Elisabeth II has been dead for a few years.