Mutual Friends

Jen and Martin start trying for a baby, but Martin's sub-optimal sperm proves to be a stumbling block.

Patrick, once again smitten with Liz, decides to break up with Martin's boss, Sarah, with whom he has been enjoying a bit of a lively fling - only to find out that she is 'late'. Leigh, meanwhile, moves into her new council house but is far from happy with the unwanted attentions of Dev.

Martin thinks he will get a partnership in his law firm, especially now that Sarah, his boss, is pregnant. Instead she warns him that unless he drums up more business he will lose his job.

Patrick persuades Martin to handle the sale of a local bookshop on a no-win, no-fee basis. Together, Patrick and he face down a City lawyer only for the bookshop owner to pull out of the deal at the last minute, leaving Martin without a job.

Patrick decides that he wants to play an active part in the upbringing of his child with Sarah - only to be told that the child is not his. Then, to his horror, Liz and his former business partner and rival Harry announce their engagement...