To quote The Guardian,

“Dr Williams is right when he argues that other religions - and not just the established Anglican faith - are allowed to police their own laws. Orthodox Jews have a beth din (a rabbinical court); there is evidence of informal arrangements in other faith communities. But what the archbishop really wants is a tolerance for the role of religion in public affairs that succeeds only in highlighting why it would be better entirely excluded.”

I'll give a religious court (of whichever persuasion) a miss, if you don't mind