That's not the point, modeller. If you want to get married in a church or any place of worship you have to abide by their rules in addition to the law.
By law you can get married in:
a church of the Church of England, Church in Wales, Church of Ireland, Presbyterian or Roman Catholic Church in N. Ireland (opposite sex couples only)
a synagogue or any other private place if both partners are Jewish
a Meeting House if one or both partners are either members of the Society of Friends (Quakers) or are associated with the Society by attending meetings
any registered religious building (England and Wales only)
the home of one of the partners if the partner is housebound or detained, for example, in prison
a place where one partner is seriously ill and not expected to recover, for example, in hospital
a licensed naval, military or air force chapel
in addition to a Registry Office or premises approved by the local council