Unprecedented access to the Royal Botanic Gardens, Kew

IT’S home to some of the most diverse, exciting and important plant life in the world. Now, cameras are going behind the scenes at Kew Gardens to chart the changing of the seasons and follow the work of the dedicated staff as they battle poisonous caterpillars, handle devastating storms and preserve endangered species. In the first episode, it’s winter but you wouldn’t necessarily know that in the glasshouses, especially the Palm House, where Solène and her team are making sure the banana plants don’t smash through the ceiling.

The Sullivan Family in Scotland: Mum Zoe and Dad Ben with their 11 children

Britain’s Biggest Families: 31 Kids and Counting the Pennies (ITV, 9pm)

Stories about how many people are struggling to make ends meet are continually hitting the headlines and food banks are being used more than ever. With that in mind, how do families with a lot more than the average 2.4 children cope? This documentary aims to answer that question by meeting up with three of the nation’s supersized broods – which are still growing – who describe how they manage their budgets. Among the topics covered are birthdays, Christmas, family days out and the importance of keeping organised.

Leigh-Anne: Race, Pop, Power: Leigh-Anne Pinnock

Leigh-Anne: Race, Pop & Power (BBC1, 9pm)

Winning the X Factor as part of Little Mix was a dream come true for Leigh-Anne Pinnock, but she quickly received a wake-up call. She was on the set of her first video rehearsal when Beyonce’s Creative Director Frank Gatson told her “you’re the black girl, you have to work ten times harder.” It’s a remark that has stayed with her. Now in the documentary Leigh-Anne: Race, Pop & Power, she’s exploring her experiences of racism and what it’s like to be a black woman in the music industry, while also addressing wider issues around unconscious bias and colourism. Along the way, she speaks to other black and mixed-race pop stars, comparing stories with Alexandra Burke, NAO, Raye and Keisha Buchanan from the Sugababes, while also talking to her family, fiancé and the MP Dawn Butler.

Saved By a Stranger

Saved By a Stranger (BBC2, 9pm)

The latest episode of the inspirational series features Navy veteran David, who was just 20 when he found himself caught up in the Falklands conflict. He was aboard the SS Atlantic Conveyor on 25 May, 1982, when it was struck by two Exocet missiles. Twelve men lost their lives in the attack, and now David wants to reconnect with some of his fellow survivors to find out how they have coped with trauma. We also meet author Darryl, who was born in Kenya to Goan parents and moved to the UK in 1968 when he was just four. His family struggled to cope with the racism they experienced, but Darryl found a safe haven at his primary school. Now, he’d like to thank the teachers who gave him the confidence to succeed.

The Corner

Coroner (More4, 9pm)

When Jenny is called to a luxury condo to investigate the death of a cannabis mogul, she enters an alternate world where nothing is as it seems. As she and Detective McAvoy get closer to the truth, Jenny’s life is put in imminent danger. Meanwhile, Jenny and her son Ross receive a fresh start in a different house further away from the city. However, they still both to contend with the family’s loss, and when she crosses paths with her handsome and enigmatic one-night stand, Liam, Jenny realises all the ways she must deal with being a widow – good and bad.

Frank of Ireland: Frank (Brian Gleeson), Doofus (Domhnall Gleeson)

Frank of Ireland (C4, 10pm)

The comedy series starring brothers Brian and Domhnall Gleeson concludes with a double bill – and in the final episode, there’s a guest appearance from their real-life dad, Brendan. In the first instalment though, Frank discovers Mary is planning to sell their house. Rather than accept that he’ll finally have to move out, Frank waits until he mum has left, then locks her out and tries to claim ownership. But who will break first – Mary, Frank or Áine, Doofus, Nicola and Stéphane, who have been barricaded in there with him?