TV tonight: Who has the poshest ancestors? Cold Feet stars Fay Ripley and Hermione Norris find out

DNA Journey

9pm, ITV1
It’s a nostalgia-fest for Cold Feet fans, as Fay Ripley and Hermione Norris are the lively pair tracing their genealogy for this fascinating series. While Norris was one half of the hit 00s show’s posh couple on screen, in reality it’s Ripley who has the more high-class background, with her journey starting at St Paul’s Cathedral in London. Norris, on the other hand, begins hers in the Butchers Arms in Durham, where a relative who was a miner died in shocking circumstances. Hollie Richardson

Ambulance

9pm, BBC One
Expect more affecting and life-affirming emergencies in the latest instalment of the acclaimed documentary series. Despite a severe and possibly dangerous headache, Ronald is enviably sharp at 93, while Rebecca suffers an agonising injury on the London underground during a day trip. Hannah J Davies

Marie Antoinette

9pm, BBC Two

Court in the act … Cardinal Rohan (Maximilien Seweryn) reveals some secrets about the queen. Photograph: BBC

The constant background gasping, tutting and gossiping of Versailles that keeps this drama alive moves to the court this week, as Cardinal Rohan’s trial begins. The queen secretly watches as the cardinal makes shocking claims about her. Will Marie try to take matters into her own hands? HR

The Savoy: Great Hotels Through Time

9pm, Channel 5
It was London’s first luxury hotel when it was built 136 years ago – and it changed the hospitality industry. This documentary tells the story of the Savoy, from the theatre impresario Richard D’Oyly Carte’s controversial plans for it to the many famous faces it has hosted. HR

Poker Face

9pm, Sky Max
Usually, Charlie Cale’s race from her past keeps her on the side of the angels. But not this week. In an episode guest-starring Melanie Lynskey and John Cho, Charlie meets a group of con artists and becomes implicated in a job gone wrong. It’s still big‑hearted fun, but Poker Face has an edge, too. Phil Harrison

Taskmaster

10.05pm, Channel 4
The five comedians battle on in their quest to win a bust of Greg Davies. While Fatiha El-Ghorri reveals her seductive scent, Stevie Martin auditions for Downton Abbey, Rosie Ramsey displays her trotting skills, Jason Mantzoukas attempts to reel in a fisher and Mathew Baynton generally sacrifices what remains of his dignity. Meanwhile, Little Alex Horne’s shoes meet a dairy-based demise. Ali Catterall