Love on the Spectrum’s Michael Theo also stars in Austin. Plus: Monty Don at the first ever RHS Badminton flower show. Here’s what to watch this evening
11.10pm, BBC One
The British-Australian sitcom about a grumpy children’s author who meets a neurodivergent man claiming to be his estranged son returns for series two. Julian (Ben Miller) receives the DNA test results and tells Austin (Michael Theo) that it isn’t a match. So they go in search of Austin’s real father … But it is Sally Phillips as Julian’s fed-up wife Ingrid who really steals the show. Hollie Richardson