TV tonight: Diane Morgan crashes The League of Gentlemen cast reunion

Deadpan one-liners cut the tension in the new series of Inside No 9. Plus: tone-deaf singers take to the stage. Here’s what to watch this evening

Inside No 9

10pm, BBC Two

Diane Morgan steals the show in the opener of Steve Pemberton and Reece Shearsmith’s seventh season of their darkly comic anthology series. She plays ditsy, foot-in-her-mouth Donna, who joins her new boyfriend Darren and his old uni friends Callum and Lawrence (played by Shearsmith, Pemberton and their former League of Gentlemen co-star Mark Gatiss) for a reunion. It’s not exactly what she expects: they spend the day on a pedalo that gets stranded, and talk quickly turns to troubling topics. Luckily, Morgan has plenty of deadpan one-liners to cut the tension. Hollie Richardson

Anyone Can Sing

8pm, Sky Arts

After three endearing episodes, our favourite tone-deaf singers get ready to step on to the London Coliseum stage to perform in front of 2,500 people. Before that, priest Ellen leads the choir at King’s College London for the first time in 28 years. Tissues at the ready. HR

Interior Design Masters With Alan Carr

9pm, BBC One

It’s semi-final time for the high-stakes makeover show, with remaining designers Amy, Paul and Banjo each in a lakeside Cotswolds lodge. They have 48-hours to transform their spaces into luxurious holiday homes. Carr, meanwhile, gets to mess around in a Jacuzzi and do his best Shirley Bassey. Graeme Virtue

Gazza

9pm, BBC Two

After charting the rise of “Gazzamania”, the concluding part of this documentary recalls the footballer’s fall from glory, with reports of domestic abuse, alcoholism and an eating disorder. There’s also a strong focus on the roles Piers Morgan and Rebekah Brooks played in provoking and monetising his downfall. HR

Raised By Wolves

9pm, Sky Atlantic

The inventive and frequently bizarre sci-fi drama manages to allegorically explore various aspects of religion and belief, while remaining genuinely entertaining. Tonight, having acquired generative powers, Marcus (Travis Fimmel) seeks to grow and harvest his own congregation. Elsewhere, Amanda Collin’s Mother becomes protective of the serpent. Phil Harrison

The Lady and the Dale

9pm, Sky Documentaries

This compelling four-part documentary is a twisty tale of confidence trickery that centres on three-wheeled 70s car the Dale. It’s all the more complex as entrepreneur Elizabeth Carmichael, transitioned from Jerry Carmichael – prompting media questions as to whether this was an assumed identity to escape her criminal background. Alexi Duggins

Live sport

Premier League football: Chelsea v Arsenal 7pm, Sky Sports Main Event. The London derby at Stamford Bridge.