TV tonight: Kristin Scott Thomas on her grandfather’s heroism at Dunkirk

My Grandparents’ War: Kristin Scott Thomas
9pm, Channel 4

Kristin Scott Thomas looks back on her family’s involvement in the second world war in the penultimate instalment of this Who Do You Think You Are? meets D-day series. Thomas’s grandfather was a commanding officer in the navy, surviving horrific battles, such as Dunkirk, but then never speaking of them to his family. It is an emotional watch, as Thomas finds out how he saved thousands at Dunkirk and then goes on to meet their relatives and hear their own stories. Ammar Kalia

The Secret Life of the Zoo at Christmas
8pm, Channel 4

Sparky the little camel would be the star of any school nativity but his arrival at Chester Zoo in the run-up to Christmas is marred by some cranky Persian horses in his paddock who aren’t too keen on him. Meanwhile, fractious red panda couple Nima and Koda hope for a bundle of joy under the tree. Graeme Virtue

Secrets of Your Christmas Food
8pm, Channel 5

If you haven’t ordered your Christmas shop yet then this show is the one for you, asking the all-important questions such as: “What turkey should you buy?” Or: “What happens to your body after a huge 6,000-calorie Christmas meal?” Fake snow abounds in this feather-light special. AK

The Baby Has Landed
9pm, BBC Two

Paternity leave is ending for some of the families and there’s no sugar coating on the feeling of pure panic when they return to work. Meanwhile, Paul and Craig prepare to take their twins home and it’s impossible to stay tear-free at the poignant moment when their surrogate hands the babies over. Hannah Verdier

Aldi at Christmas
9pm, Channel 5

More supermarket secrets, this time from German budget chain Aldi, which has grown to become one of Britain’s favourite shops since it arrived in 1990. Archive footage explores how the chain has dealt with past Christmases, while one family is given £100 to bag as many treats as they can in one store. AK

Inside the Operating Theatre
10pm, W

More behind-the-scenes action from the camera-rigged operating room at Queen Elizabeth hospital, Norfolk. We meet Luke, eight, who needs a procedure to straighten a squint that is affecting his schoolwork and concentration. Meanwhile, Brian, 81, is having an ultrasound to check for cancer. Ali Catterall

Film choice

Wild Tales, 1.30am, Film4
Damián Szifron’s fiercely funny and violent portmanteau of gory morality tales is set in an Argentina teetering on the brink of lunacy. Ricardo Darín leads in a story that demonstrates the foolishness of enraging a demolition man; other sections point to the dangers of road rage. A bloody delight. Paul Howlett

Live sport

Champions League football: Bayern Munich v Tottenham 7pm, BT Sport 2. Bayern take on Mourinho’s men.

Championship football: Birmingham City v Queens Park Rangers 7.30pm, Sky Sports Main Event. The sides clash at St Andrew’s.

PGA Golf: Presidents Cup 11pm, Sky Sports Main Event. The opening day’s play at Royal Melbourne golf club.