The Party is the 13th episode in the series.

Plot synopsis

Already put out that Ann has gone to Paul's pre-Christmas party alone, Martin is even more annoyed to wake up in bed with Paul, who has a houseload of party guests staying, whom Ann has volunteered can stay at the Bryces. Martin is appalled that his ordered world has been invaded by jolly people, including Hilda and Howard, thanking him profusely for being a great host. Paul tries the subtle approach to flatter him, but the best time for Martin is when he and Ann slip away to the garden shed - which he has decorated - to wake up together on Christmas morning.