Muslim leaders have demanded the same legal exemptions as the Church of England in legislation to introduce gay marriages.
The Muslim Council of Britain (MCB), with more than 500 affiliated mosques, charities and schools, said it was "appalled" by "utterly discriminatory" legislation on same-sex marriage set out by the government.
The proposals would allow faith groups to conduct gay marriages but would ban the CofE and the Church in Wales from doing so.