The first episode centres on an upper-crust but down trodden husband, Peter and his uncaring wife, Flick, who suffers from a rather convenient sexual disorder.

This edition features a happily married, middle-aged couple who run their own guest house in the Black Country - as well as organizing swinging parties for S&M enthusiasts.

This edition focuses on Michelle and Stephen, who live in a working-class community in the Welsh valleys.

Neurotic Barne and wannabe rock chic Fonte invite the cameras into their home to prove that they have a thoroughly modern relationship. Fonte just wants her 15 minutes of fame, but Barne finds that being filmed is a useful form of therapy.

A south-coast couple who run a shop selling everything from sandwiches to bras are approaching their eighth wedding anniversary. Husband Ray has always wanted to go on a cruise, so wife Les arranges a trip on a cross-channel ferry. But the fate of the couple's twins remains unexplained.