Trigonometry

(BBC2, 10pm-10.45pm)

Gemma (Thalissa Teixeira) and Kiernan’s (Gary Carr) big day has arrived, so in theory they should be thinking about their vows to each other. Instead, they are both reeling following Ray’s (Ariane Labed) heartfelt declaration – and Kieran is so confused by his feelings that he ends up lashing out. Ray decides it would be for the best if she made herself scarce, but that proves harder than she anticipated when Gemma’s friends recruit her to help dress the bride. Despite all the emotional upheaval the ceremony goes ahead, but it seems the new husband and wife are both still drawn to their lodger.