Birds of a Feather (1989) : 3x7

Dorien suggests a car-boot sale, and the girls are keen - Sharon can get rid of some of Chris's old stuff, and Tracey will sell things that son Garth has outgrown. However, while clearing out possessions, an old photo is found with Darryl at a party, under the table with someone else. Sharon is chucked out of the house by Tracey for keeping it a secret.