We can repeal the GRA - many of the reasons for it no longer exist.
We can put in mitigations for alternative solutions to any remaining issues if we wanted.
We can't ban beliefs though. Because they fall under Human Rights protected under the Human Rights Act and the ECHR. (The Human Rights Act is central to membership of the ECHR).
This is why when the Tories wanted to get rid of the Human Rights Act they hit a problem. It's encoded into our membership of the ECHR, Devolution of NI, Scotland and Wales, and ECHR membership is a pre requisite of EU trade deals.
So good luck with that one.
Absolute roasters the lot of them