Horizon: Stopping Male Suicide, BBC2, 9pm
XAND Van Tulleken investigates why suicide is the biggest killer of men under 50 in the UK, causing more deaths than car accidents, and cancer. He explores the reasons why people develop suicidal thoughts, and whether there is anything that can be done about it. Xand meets Steve Mallen, who lost his 18-year-old son Edward to suicide in 2015. In the years that followed his son’s death, Steve launched the Zero Suicide Alliance, a collaboration of NHS trusts, businesses and charities who are all committed to preventing suicide in the UK.

David Walliams Presents – Return of Alright on the Night, STV, 9pm
IT’S only weeks since David Walliams was revealed as the new presenter of the evergreen “bloopers” show, and here he is back with another edition. He’s the ideal presenter, someone who can poke fun at the events depicted without becoming nasty about the unfortunate person at the centre of it all. Walliams has stepped into the presenting shoes of Denis Norden, who hosted the show from 1977 to 2006; Griff Rhys Jones took over for eight years, but now it belongs to Walliams.

My Asian Family: The Musical, BBC4, 10pm
IN 1972, 12 members of the Thakar family arrived in Britain with virtually nothing, fleeing for their lives from Idi Amin’s Uganda. In the decades that followed, they found jobs, love and new lives, and the family now includes 90 members across three generations. As you may have gathered from the title, this programme tells their story through song and dance, showing how the Thakrars have preserved their Hindu cultural traditions while also adapting to British life.

How to Lose Seven Billion Pounds, C4, 10.30pm
LIAM Halligan unfolds the story of Carillion, the UK’s second-largest construction firm built on billions of pounds of public money that imploded in January this year. Using new testimony from insiders across the City and Whitehall, as well as Carillion itself, Halligan’s investigation reveals that Carillion constructed a fortress of phony profits, while hiding mounting debts with aggressive accounting.