All the films screening at the Prince Charles Cinema on Boxing Day, which include Peckinpah's The Wild Bunch, are £1 for members. You can find the details here. This choice is one of Michael Powell and Emeric Pressburger's finest achievements.
A story of damaged faith and rising sexual hysteria (1946) set among a group of nuns in India who are working to convert a sultan's palace into a convent. Films on this subject are generally solemn and naive, but director Michael Powell and writer Emeric Pressburger bring wit and intelligence to it—the title, for example, refers not to some campy romantic theme but to a cheap men's cologne worn by the local princeling. The film's lush, mountainous India, full of sensual challenges and metaphorical chasms, was created entirely in the studio, with the help of matte artist Peter Ellenshaw. Powell's equally extravagant visual style transforms it into a landscape of the mind—grand and terrible in its thorough abstraction. With Deborah Kerr, David Farrar, Jean Simmons, and Sabu.
Here (and above) is the trailer.