Nighthawks (1978)

Jim (Ken Robertson), a London teacher by day who spends his evenings cruising bars and discos, on the lookout for men from different backgrounds and places and trying to connect with them whether for sex, attempts at a relationship or friendship. He attempts to keep his life compartmentalised, his 'Gay encounters' and his 'friendships with school colleagues', something that seems a necessity working with school children, but can the status quo can't remain forever.