DIY SOS: The Big Build (BBC1, 8pm)

THIS time, Nick Knowles and the team transform a home in Bromsgrove. Karis, a 28-year-old woman who has cerebral palsy, currently lives with her mother, Karen, but now her own health is deteriorating and it is making caring for Karis almost impossible. The family have decided that Karis should move in with her older sister Jo, but her home is inaccessible for Karis, so the team decides to build a large two-storey extension to make the house more suitable.

The Apprentice (BBC1, 9pm)

IN the eighth week of the competition, the candidates are challenged to host a corporate away day onboard the iconic Belmond British Pullman Train, arranging food, drinks and entertainment and also securing a good ticket price. The task will require the teams to show off their organisation and hospitality skills as they hope to impress the corporate clients. For one of the teams the journey gets off to a bumpy start.

Paul O’Grady: For the Love of Dogs (STV, 8pm)

THE eponymous funnyman meets Samson, an Akita who doesn’t share the usual traits of the breed. Normally they’re aloof and standoffish, but Samson’s like a huge teddy bear. The vet team just need to work out what’s wrong with his injured nose. Paul also assists a former racing greyhound.

Boeing’s Killer Plane: What Went Wrong? (C4, 9pm)

WHEN Boeing unveiled the 737 Max, it promised a quieter ride for passengers, with increased fuel efficiency and an 8% reduction in operational costs, as well as a new anti-stall system. No wonder it became the fastest-selling aircraft in the manufacturer’s history with more than 5000 orders. But then on October 29, 2018, Lion Air Flight 610 crashed into the Java Sea, killing all 189 people on board. Less than five months later, Ethiopian Airlines 737 MAX also crashed at the cost of 157 lives. With investigations into the latter tragedy still ongoing, this documentary looks at what went wrong.