What’s The Matter With Tony Slattery? (BBC2, 9pm)

THERE was a time when you could barely turn on the TV without seeing Tony Slattery smiling back at you. He was a regular on improvised comedy show Whose Line Is It Anyway? and starred in such TV shows as Gems, This Is David Harper, That’s Love and Just A Gigolo; his films from the same period include Peter’s Friends, The Crying Game and Carry On Columbus. And then, amid rumours of a nervous breakdown, he pretty much disappeared for the best part of a decade. Last year Slattery toured the UK with a highly personal show that confronted his past and battle with mental health issues. Now he wants to nail down exactly what is wrong – he was diagnosed with depression, but both the performer and his long-term partner Mark are convinced there’s more to it than that.

Paddington: A Year On The Tracks (C5, 9pm)

IT’S the height of summer, and a heatwave is hitting the network. Clocking on for the night shift, production manager Colin has a backlog of heat-related problems. While he battles to get four sets of trains ready for the morning, Mick and his team work to prevent the rails from buckling in the heat, by stretching a section – using a jaw-dropping 26 tonnes of pressure. A moment of madness unfolds when CCTV picks up a young man jumping on to the tracks to retrieve a sleeping bag seconds before a 400-tonne train rolls in.

The Real Marigold Hotel (BBC1, 9pm)

THE friends go all out to make Susie’s birthday one to remember, and as the celebrations begin, Britt is keen to show she still has what it takes by showing off her singing and dancing talents. The senior citizens also head to Chennai, where Zandra is reunited with a friend from 40 years ago and Henry relives some difficult memories of his last overseas broadcast at the city’s famous cricket ground.

First Dates Hotel (C4, 9pm)

MUM-OF-TWO Lisa lost the love of her life three years ago and is now looking for someone to spend the future with – crucially someone who isn’t bald. Her date is businessman Steve. But will his full head of hair be enough in the to win her affections?