I think the bigger halls don't worry too much about religion... here we are, from regent's park website
The college imposes no religious tests or obligations on those who are not preparing for ordination, but offers students the opportunity, if they so wish, to explore and develop a 'Christian mind' about the world and academic learning, especially through the activities of its Centre for the Study of Christianity and Culture.
Whereas St Benet's says... Students need to be benevolently tolerant of monastic life.