U and Dave ja vu

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Quiz in which contestants try to score as few points as possible by plumbing the depths of their general knowledge to come up with the answers that no-one else can think of.

Officers intercept a shipment of hundreds of gun parts headed for Mexico, a nurse is caught smuggling pills in her boots, and a traveller carrying goat meat is inspected.

A tip-off unearths a vast shipment of heroin and cocaine disguised as garbage bags, and officers respond to a medical emergency and deal with a drunken US Marshal.

The team are tasked with removing a broken-down tractor from a caravan park in trouble with the law, and Luke responds to an unlucky boat owner in desperate need of help.

Rick Stein shows us the unique flavours and sounds of a Cornish Christmas, joining in the tradition of wassailing, cooking his own goose and trying local tipples.

Has punk poet John Cooper Clarke got the slippery quality needed to excel on the devious comedy panel show? Greg Davies, Alex Jones and Rick Edwards also join the regulars.

Countdown dictionary expert Susie Dent, comedian Bob Mortimer and TV presenters Ore Oduba and Stacey Solomon join team captains David Mitchell and Lee Mack on the comedy panel show.

River Cottage resident Hugh Fearnley-Whittingstall, media personality Jodie Kidd, comedian Jamali Maddix, and TV presenter Suzi Perry join the best-selling Richard this time.

After 30km of tunnelling, workers prepare to build stations, lay tracks and test driverless trains. At Central Station, the underground pedestrian subway comes to life.

Chris, Freddie and Paddy hit the German autobahn in a trio of shiny supercars from Ferrari, Pagani and Porsche, and they also try out the latest electric micro-cars with a game in Paris.

Freddie samples the brutal full-contact motorsport of F1 stock cars, Chris gets to grips with Mercedes' 'F1 car for the road', and Paddy takes a drive in a luxurious Range Rover.

The Bikers reveal the British obsession with apples, its passion for pears - with dishes including a beef and apple tagine - and the history of Wassailing.

Rick Stein shows us the unique flavours and sounds of a Cornish Christmas, joining in the tradition of wassailing, cooking his own goose and trying local tipples.

Has punk poet John Cooper Clarke got the slippery quality needed to excel on the devious comedy panel show? Greg Davies, Alex Jones and Rick Edwards also join the regulars.

Countdown dictionary expert Susie Dent, comedian Bob Mortimer and TV presenters Ore Oduba and Stacey Solomon join team captains David Mitchell and Lee Mack on the comedy panel show.

Previous winners Stephen Bailey, Charlie Brooks, Ria Lina and John Thomson test their general knowledge skills in a variety of trivia-based games.

Sandi Toksvig hosts a vintage episode with Susan Calman, Rosie Jones, Josh Widdicombe and Alan Davies.

Sue Perkins is host as comedian Michelle Wolf and journalist Tom Peck join team captains Paul Merton and Ian Hislop to delve into the news.