Nigella Lawson joins The Great British Bake Off as a new judge, setting challenges that produce mixed results and comic tension in the tent. The evening’s other programmes include the conclusion of 70 Up, a final sand-sculpting contest, NHS trauma cases and documentaries about coercive relationships and human behaviour.

Bake Off contestants tackle chocolate stout cake, coffee and walnut cake, and self-portrait showstoppers, while one challenges Lawson’s own recipe. The final 70 Up episode reflects on mortality; a Malaysian rainforest competition offers 12 strangers the chance to share £300,000; and England face Sri Lanka in the first match of a three-game one-day international series.