The complaint form Ofcom says you should use to report websites for violations of the #OnlineSafetyAct does not allow you to enter URLs, because it might be illegal for Ofcom to look at them.

What is going ON over there.

@aphyr Hammer to crack a nut - but given that one of the categories is CSAM, it sorta makes sense. They'd be committing an offence if they looked at anything containing that, and it could be used as a DDoS against them.