Great British Car Journeys, C4, 8pm

CHRISTOPHER Timothy and Peter Davison conclude their series of vintage road trips by travelling into the Rhondda Valley, across the Brecon Beacons, and into Snowdonia in their 1930s Morgan 4/4. They recreate a vintage speed trap and hitch a lift to the top of the world’s biggest slate mine, before catching up with one of Christopher’s oldest friends.

Trapped, BBC4, 9pm

THE Icelandic thriller starring Olafur Darri Olafsson returns. A shocking attack on a politician in Reykjavik sends detective Andri Olaffson back to his home town of Seyoisfjorour. Once there, he works with former colleagues to investigate a suspected link between the case and far-right nationalists. However, with no police support able to arrive from Reykjavik until a snowstorm clears, the team are faced with a seemingly hopeless task. Can Andri and co make a breakthrough?

Williams: Formula 1 in the Blood, BBC2, 9pm

THE name Williams is now synonymous with Grand Prix racing, but the road to success was a long and difficult one for the team’s founder, Frank Williams. Born in South Shields in 1942, he became hooked on cars in his teens and, while working as a travelling grocery salesman, created his first racing team but faced financial issues, eventually selling it and starting again. This documentary recaps the stunning success Williams has enjoyed since then. This is a compelling tale of one man’s determination to succeed, while the horrific 1986 road accident that left him wheelchair-bound is also covered.

Spending Secrets of the Royals, C5, 9pm

A LOOK at the expenditure of the royal family, including Prince Andrew’s penchant for luxury travel, the gigantic bill for the Buckingham Palace restoration and the late Queen Mother’s well-known love of champagne, which resulted in her allegedly smuggling a case of bubbly into hospital during a visit for a hip operation. Pro- and anti-monarchists put forward their arguments for whether the royals are a financial burden that taxpayers should no longer bear or a unique asset to be cherished.

Spy (2015), Channel 4, 9pm

MELISSA McCarthy plays deskbound CIA analyst Susan Cooper, whose quick thinking and hi-tech gadgetry consistently save Bradley Fine (Jude Law) while he is on secret dangerous missions. When Bradley and other agents, including British bruiser Rick Ford (Jason Statham gamely sending up his hardman image), are compromised, Susan puts herself forward for active duty to infiltrate the inner circle of arms dealer Rayna Boyanov (Rose Byrne). Spy is a terrifically entertaining caper and McCarthy throws herself into her role with gusto.