For the last 700 years, it has been the main place of Christian worship in the Palace of Westminster, aside from brief periods as a wine cellar and a stable for Oliver Cromwell’s horses.But now, it seems, the Government has a new role in mind for the chapel of St Mary Undercroft, which is nestled in a crypt beneath Parliament. Ministers are considering changing the historic Anglican chapel into a multi-faith prayer room – so that it can be used to conduct same-sex weddings. Under the gay marriage legislation currently passing through Parliament, the chapel will not be able to...