The Choir: Aylesbury Prison
9pm, BBC Two
Choirmaster Gareth Malone applies his signature optimism to starting a choir in Aylesbury’s prison for young offenders. With more than 200 boys currently incarcerated and serving from four years to life for their crimes, Malone has a challenge on his hands to help the prison get out of the special measures it has been placed in for its increasing levels of violence and self-harm. Yet he is nothing if not resilient, and his open approach might just work. The first of a two-part series, and the perfect remedy for any January blues. Ammar Kalia
Celebrity Coach Trip
Everyone’s favourite tour guide Brendan is back with a coachload of celebrity pairs, fighting it out to stay on their European jaunt. The celebs include Blue’s Anthony and Simon, First Dates staff Cici and Rustie and Gogglebox’s Amy and Jonathan Tapper, all starting their journey in sunny Saint-Tropez. AK
How to Lose Weight Well
8pm, Channel 4
Doctors Xand van Tulleken and Helen Lawal capture the annual “new year, new me” mood with a new series of their diet-conscious show. From sisters hoping to slim down for their birthday to truckers preparing for a hot-tub party (yes, really), the medics advise on how we can all shed the pounds safely. Hannah J Davies
24 Hours in Police Custody
9pm, Channel 4
Over eight series, this fascinating police documentary has revealed the miserable mundanity of much UK crime. Real-life “whodunnits” are a rarity in Bedfordshire and Cambridgeshire, but this twist-filled two-part series opener comes close. And it all begins with the discovery of a body. AK
Britain’s Loudest Snorers
9pm, Channel 5
It’s loud, it’s annoying, and – with an estimated 15 million people who do it in the UK – a problem most people are either contributing to or living with. Yes, it’s snoring, an issue that Embarrassing Bodies’ Dr Christian Jessen is attempting to find a cure for. Earplugs at the ready! HJD
11.35pm, Channel 4
This Dutch series on – you guessed it – adultery returns for its second season, after the first saw the unfolding of the chaotic affair between photographer Iris and lawyer Willem. Now together as a couple, the pair are finding life more complicated than anticipated as Willem faces off against his father-in-law. AK
The Girl on the Train (Tate Taylor, 2016) 9pm, Film4
Fans of Paula Hawkins’s novel were not amused by the liberties taken in Tate Taylor’s screen adaptation, but it does have the compelling Emily Blunt as vodka-addled Rachel, who glimpses something from the commuter train that may relate to the disappearance of Haley Bennett’s Megan. Paul Howlett
Big Bash cricket: Sydney Thunder v Brisbane Heat 8am, BT Sport 1. T20 action from the Gabba.
BDO World Championships darts 7pm, Eurosport 1. Day-three coverage from the indigo at the O2 in London.
FA Cup football: Arsenal v Leeds United 7.30pm, BBC One. The Gunners face Championship promotion contenders Leeds.