Who Do You Think You Are?: BBC One, 9pm
The new series begins with BAFTA-winning actress Julie Walters, who starred in Mamma Mia! and the Harry Potter movies, looking back at her family history.
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She traces her roots back to County Mayo in western Ireland, where her great-grandfather Anthony Clark was one of the first members of the Land League.
Scandal: Sky Living, 9pm
Fitz is reluctant to go along with Mellie and Cyrus's plan, and Olivia (Kerry Washington) learns the price she has to pay to ensure Jake's safety.
Meanwhile, flashbacks reveal more about Olivia's relationship with her father, the origins of her friendship with Huck, and also highlights the true extent of how dangerous Rowan and B613 are.
Cuckoo: BBC Three, 10pm
The comedy returns, starring Taylor Lautner. Two years after Cuckoo went missing and was presumed dead, Ken and Lorna are looking forward to a future without kids under their feet.
Dylan is about to go to university, and Rachel is rebuilding her life with her new boyfriend, but the arrival of a mysterious stranger threatens to disrupt life in the Thompson household.
Siblings: BBC Three, 10:30pm
New sitcom that follows brother and sister, Hannah and Dan, as they wreck the lives of those around them.
Dan becomes bored, with no friends other than Hannah, who's struggling to deal with her new boss.
