But what I'm saying is they don't and won't. Homosexuality was decriminalised in 1967, has that stopped people from being homophobic or discriminating against gay people? Islam is especially discriminatory against gay people, should we just somehow accept this because the gay man can go to the police if need be? Of course not, we fight discrimination at every corner and any discriminatory religion based culture should be fought against.
The reality of UK law is no person should experience discrimination full stop. Legislation exists against discrimination and therefore a religious based law with its own court is completely incompatible with the UK. At the moment we only tolerate it because we're too scared to challenge it otherwise UK law would recognise their existence.
The greatest advances in equality and discrimination have actually not come through law, they've come through the wholesale rejection of religion and the fact that most people's values aren't built upon religion anymore. Should we therefore really accept the introduction of the worst aspects of a religion and consider it part and parcel of 'tolerance' ?