Who Do You Think You Are? (BBC1, 9pm)

THERE’S been a little switch in the tenth year of this always-popular series and Billy Connolly becomes the 99th celebrity to take part and the honour of becoming the 100th celebrity skeleton in the cupboard searcher now goes to Twiggy next week.

Scotland’s biggest comedy, presenting and film star product, who is known as the Big Yin, won’t mind being denied the centenary accolade... he feels lucky to be here at all, having come through a recent cancer scare.

The father-of-five, who is married to former Not The Nine O'Clock News star Pamela Stephenson, is looking fit and healthy and claims he hasn't changed "a single thing" about his lifestyle since his diagnoses, but admits to being "kind of clumsy sometimes" as a result of the Parkinson's, and is struggling to play the banjo as well as he used to - "which is a pain in the butt".

It didn't take the comedian - who also wears hearing aids - long to see the lighter side of his health problems, "because I've always been on the outside of it".

"At one point, I went to see the doctor when they discovered I had the cancer thing. He was doing a drawing of my kidneys and prostate and how it works and the bladder and stuff, and he said, 'You're not going to die'," Connolly recalls.

"I was absolutely shocked - it never crossed my mind that I might die. I said to myself, 'Of course I'm not going to die!' So I've never been deeply involved with it in that sense. I don't go on the internet and look up Parkinson's disease and see how I'm getting on. F*** that. I just live my life and it's clumsy and that's it."

Billy famously hails from Glasgow, where he was born in 1942, but is convinced his mother's family were originally from Ireland - until conflicting information about his great-grandmother Mary Doyle fails to clear up the mystery, making it more complicated and mysterious instead.

He then journeys to India to delve into the past of ancestors who were caught up in 1857's Great Rebellion and the Siege of Lucknow.

Peaky Blinders (BBC2, 9pm)

RAZOR blades hidden in caps, danger around every corner and dastardly goings-on in Birmingham - that's the stuff this hit drama is made of. Hollywood stars Cillian Murphy and Sam Neill made the most of a great script from Steven Knight, writer of the screenplays for Eastern Promises and Dirty Pretty Things, in series one set in the post-First World War Midlands.

While Sam Neill appears to be missing from the cast list, another big name, Tom Hardy, is making an appearance. Last year Hardy starred in Locke, an inventive film written and directed by Knight set entirely inside a car. He's also well-known to Murphy - the pair appeared in The Dark Knight Rises, the final film in director Christopher Nolan's Batman trilogy.

Blenheim Palace: Great War House (ITV, 9pm)

BEST-KNOWN for being the birthplace of Winston Churchill and as the ancestral home of the Dukes of Marlborough, this documentary, presented by Oscar-winning screenwriter and Downton Abbey creator Julian Fellowes, reveals, the incredible effect the First World War had on Blenheim.

Like many great houses, Blenheim had its rules and rituals - all of which were ripped apart by the advent of the conflict in 1914. Life would never be the same there again. Fellowes takes us on a tour of the property, revealing how the palace became a hospital for wounded soldiers, with one of its finest rooms, the Long Library, being turned into a medical ward. Workers from the estate volunteered for military service alongside the aristocrats who lived there, and while some returned home physically unscathed, others were not so fortunate.