One Aldwych
Seats 30, minimum 20, £55 per person - screen your own choice of film on HD Blu-Ray, DVD or VHS. I'm pretty sure they used to have a season of films that were open to the public too (rather than just private bookings).
The Berkley (rooftop gardens), Kensington
2011/2012
Winter Wonderland season - 18 November 2011 - 31 January 2012
Cinema with four seats, £55 per person - featuring fluffy blankets, warm mugs of cocoa and Christmas classics.