TV tonight: has ‘worst Traitor’ Alan Carr really got away with murder?

The Celebrity Traitors

9pm, BBC One
Is Alan Carr even worse than Linda? Or is he, somehow, going to get away with murdering his best mate Paloma Faith? The producers very naughtily left us on a cliffhanger last week, as the first banished contestant was about to be announced – but it was a toss up between Kate Garraway and Niko Omilana. If Kate survives, though, it’s going to be a hoot watching suspicious Tom Daley give her hell for using words like “flabberghasted” in the next task. The devilish events, overseen by Claudia Winkeman, continue on Thursday. Hollie Richardson

The Repair Shop

8pm, BBC One
Four family treasures arrive at the shed for repair: John’s century-old (and once-working) model of a coal mine, built by his miner grandfather; Sarah and Laura’s tattered Victorian writing box; Jacquie’s 75-year-old Rosebud (an over-loved doll, not a sled); and Tillie’s rare but stained 1930s Humber Bridge drawing. Can new legs and a wig be found for Rosebud at least? Ali Catterall

Portrait Artist of the Year 2025

8pm, Sky Arts

Celebrity sitter … presenter James May. Photograph: Chris Lobina/Story Vault Films

Presenter James May, actor Billy Porter and broadcaster Emma Barnett are in for a tearful and nerve-racking time as they sit for their portraits in this lovely competition. Judging the works are Tai Shan Schierenberg, Kathleen Soriano and Kate Bryan. HR

Grand Designs

9pm, Channel 4
The One Planet Development planning laws are unique to Wales, allowing rural housing that will achieve a low ecological footprint. Marcus and Abi have just been granted permission to build in Pembrokeshire, where they have £100k for an off-grid family home. Kevin McCloud checks in on their journey. HR

Doc

9pm, Sky Witness
This drama about an amnesiac doctor trying to piece together eight lost years continues on its intriguing path. This time, a woman collapses at the altar on her wedding day. Stress or marital cold feet? Meanwhile, in memory recovery news, Molly Parker’s Amy meets yet another colleague who bears a grudge against her. Was she really that horrible, pre-accident? Phil Harrison

Britain’s Most Expensive Houses

10pm, Channel 4
The old money answer to Netflix’s Selling Sunset makes up in snobbery what it lacks in swimming pools. In this episode, there are sea views, too, as broker Josh seeks something for Rob in the £15m range with direct beach access. Meanwhile, up in County Durham, Lord and Lady Gray are looking to downsize from the country pile. Ellen E Jones