DIY SOS: The Big Build – Bidford-on-Avon
9pm, BBC1
The team head to Warwickshire to help Chloe, who suffers from the genetic disease mastocytosis, which has left her confined to the family home since she was diagnosed at 18. Bringing the independence she desperately needs are the team of volunteer builders, fronted by Nick Knowles and Laurence Llewelyn-Bowen, as the house is transformed to encompass a brand new, self-contained apartment. Hankies at the ready. Ben Arnold
The Sheriffs Are Coming
8pm, BBC1
This fly-on-the-wall series continues its umpteenth run. In this latest outing, the nation’s favourite high court enforcement officers attempt to retrieve funds from a limo company, though the boss has other plans. Meanwhile, sheriff Ken Warby gets in a right old ding-dong in a dress shop. Plus, the enforcers come to the aid of a luxury motorhome owner left stranded when a customer cancels a booking at short notice. Ali Catterall
Hidden Restaurants with Michel Roux Jr
8pm, Channel 4
The genial chef’s abandonment of fine dining for rustic and communal eating in his Kent oast house leads him to the West Country for menu inspiration. Specifically, to a restaurant with kitchen garden near Bristol airport, a dairy farm staff canteen in Somerset and a shed in a Gloucester garden. While Roux whips up an artery-clogging chocolate pud, chef Freddy Bird meets siblings who turned a boat into a seafood restaurant. Sharon O’Connell
Incredible Medicine: Dr Weston’s Casebook
9pm, BBC2
Dr Gabriel Weston looks at medical anomalies – and what they teach us about the human body. Tonight sees the doc investigating how the process of gestation can create super-strong bones, warrant genetic engineering, and even create someone as unique as Sunia. Rather than being debilitated by her sickle-cell disease, she remains a full-of-beans 11-year-old. Why? It’s all down to her foetal haemoglobin. John Robinson
The Royal House of Windsor
9pm, Channel 4
This solid series about the internal politics and rebranding of Buckingham Palace moves on to one of its biggest PR challenges: Diana. Her photogeneity and candour were popular but made the Windsors itchy. The bad marriage to Charles meant a reckoning was inevitable; when their divorce was followed by Diana’s death, the royal edifice briefly wobbled. Archived palace correspondence helps to retell a familiar tale. Jack Seale
Dr Christian Will See You Now
9pm, W
This new series sets up TV locum Christian Jessen in his own clinic, with specialists on standby to help patients whose medical issues are having an adverse effect on their relationships. As well as getting each sufferer to open up about their (often intimate) problems, Dr Christian applies his brisk bedside manner to their loved ones, to gain insight and encourage practical support. In some cases, life-changing stuff. Graeme Virtue
Cosmic Dawn: The Real Moment of Creation
10pm, Eden
Who knew? The big bang was practically as powerful as a soggy party popper, at least compared with its successor – the Cosmic Dawn, or moment of first light. While that big bang brought about the universe we call home, the Cosmic Dawn introduced stars, light and life into a previously dowdy cosmos. Luckily, while those events were approximately 100m years apart, this documentary promises to skip much of that. Mark Gibbings-Jones
Film choice
Billy Elliot (Stephen Daldry, 2000) 9pm, BBC4
Daldry’s warm-hearted tale of a young northern lad’s search for self-expression is a sort-of musical Kes. Jamie Bell is 11-year-old Billy, who wants to swap his boxing gloves for ballet shoes. Set against the grim background of the 80s miners’ strike, it’s full of fun and energy, with Julie Walters in her element as his no-nonsense dance teacher.
Internal Affairs (Mike Figgis, 1990) 11pm, TCM
British director Figgis does a thorough American job in this powerful tale of police corruption. Richard Gere is dark and dangerous as a cop with suspiciously expensive tastes, under investigation by LAPD’s internal affairs section. A mano-a-mano contest with investigator Andy García that opens raw wounds – physical and emotional – as García’s wife (Nancy Travis) enters the fray. Paul Howlett
Live sport
Cycling: Tour of Catalunya Stage three of the road race; a 181km journey from Mataró to La Molina. 2.45pm, Eurosport 1
Golf: WGC-Dell Match Play Championship The first day’s play at Austin Country Club in Texas. 6pm, Sky Sports 4
International Football: Germany v England Gareth Southgate’s mob face a tricky friendly in Dortmund against the World Cup holders. 7.15pm, ITV