London Sex Project: Infidelity. What is the London Sex Project? 6 out of 10 people have sex outside their relationship. Leading adult film producer, Joybear Pictures, has commissioned award-winning filmmaker, Oliver McDowell, to find out why. Critics are calling this the most explicit documentary ever made. After months of interviews, McDowell and the LSP research team have found a group of Londoners who are willing to talk openly about sex outside thei...