Rating: Daleks in Downing Street – that ought to liven up the Cabinet reshuffles. Admit it, there were moments last year when you’d have paid good money to see a couple of those murderous, upturned dustbins shrieking ‘Exterminate!’ as they chased Dominic Cummings up Whitehall. Doctor Who (BBC1) went one better. Four Daleks were stationed outside the black front door of No 10, where a uniformed bobby usually stands. They turned on wicked Prime Minister Harriet Walter and zapped her with their ray guns. A nation cheered – and then perhaps felt a little guilty for enjoying the spectacle so much. Still, after such a subdued Christmas, we’re entitled to be a little vindictive.