Succession
9pm, Sky Atlantic
As Shiv stirred the pot around his predilection for sending nude pics to Gerri, it seemed that Roman was having the worst week of all the Roy siblings. Kendall wasn’t faring too well either, with Logan having reneged on his earlier offer to end their civil war and let him cash out. Then came the end of episode eight, and the moment of tragedy viewers had been both dreading and anticipating all season (and could it really be?). With all the bickering, backstabbing and Lukas Matsson’s tech bro twaddle suddenly rendered utterly trivial, prepare yourself for a devastating, revelatory end to this masterful third series. Hannah J Davies
David Baddiel: Social Media, Anger and Us
9pm, BBC Two
Part polemic, part appeal for common sense, this documentary sees Twitter addict Baddiel explore the grim synergy between new communications technology and dysfunctional movements ranging from rightwing populism to “cancel culture”. It’s understandably light on plausible solutions but, at the very least, it’s a thoughtful acknowledgment that, collectively, we have a big problem that isn’t going away any time soon. Phil Harrison
Guy’s Garage
9pm, Channel 4
More mechanical tinkering from Guy Martin – in this episode, prepare for the slowest and least glamorous race of his career. Underpowered, functional and basic in every sense, the Trabant was a symbol of pre-glasnost East Germany. Guy prepares for a race at Brands Hatch in which these dowdy vehicles are pushed to their limits. PH
A League of Their Own: Christmas Special 2021
9pm, Sky Max
Romesh Ranganathan is in charge of the banter-fuelled panel show’s festive fun this year and he’s dragging Freddie Flintoff and Jamie Redknapp to Center Parcs for physical challenges with a variety of special guests. Ranganathan also likes to get his mum involved – tonight, she’s helping him serve a Sri Lankan Christmas meal. PH

Two Doors Down
10pm, BBC Two
All flu-ridden Beth (Arabella Weir) wants is a hot water bottle, so every neighbour in town is popping in to give advice, soup and anecdotes about legendary colds they’ve had. The action reaches a climax when tact vacuum Cathy (the fabulous Doon Mackichan) turns up to bring her unique brand of entertainment and tough love. Hannah Verdier
The Cockfields Christmas Special
10pm, Gold
Christmas with the Cockfields rings in festive drama. Simon has made time out from his busy work schedule to visit his mother two days after the 25th only to find friction with his stepfather. Tensions rise but can a trip to the pub bring peace? HV
Live sport
Championship football: Sheffield United v Queens Park Rangers Mon, 7pm, Sky Sports Main Event. From Bramall Lane.