A1: Britain's Longest Road

Police are called to a major pile-up which threatens to close the road. Traffic examiners clamp down on dangerously overloaded vehicles, and there is a mammoth mission to deliver a couple's dream retirement home nearly two hundred miles up the A1.

Traffic police in Scotland respond to an emergency with an overturned car. Tempers boil over after a double crash at rush hour, and there is a battle to move a huge machine to the end of the road in London for an appointment at the Lord Mayor's Show.

An A1 patrol officer gate called to help a biker fighting for his life. Traffic officers come face-to-face with a lorry driver flouting the law, and a boat transporter is marooned after a puncture halts the journey.

Bad drivers face a police crackdown, traffic officers race to the scene of a treacherous blowout, and Santa's reindeer head hundreds of miles south down the A1.

Police race to the scene of a head-on collision, and a milk lorry overturns bringing rush hour chaos to the A1. Also, a reckless speeder is tracked down after putting road workers lives at risk.

A horrific crash causes ruched hour chaos on the Great North Road, and traffic inspectors launch a crackdown on distracted lorry drivers. Also, the bumpy mission to deliver a herd of camels up the A1 to a city's Christmas nativity.

A lorry breakdown causes rush hour chaos, and emergency response teams are called after collapsed power lines close the A1. Also, after a marathon journey north, a fireworks display team faces having to abandon a seafront spectacular.

A suspected stolen vehicle leads police to pull a driver who is found to be over the drink drive limit. Also, a couple hope their six hours A1 journey with their top show dog will end in glory.

A runaway van careers down a embankment to leave the A1 in total gridlock. Police race to a multiple car crash near Newcastle, and the battle to deliver a luxury liner to the London Boat Show on time.

A serious smash on a busy A1 junction leaves the driver's life hanging in the balance. Also, will treacherous weather hamper an emergency roadside repair? Plus, the perils of transporting a priceless piece of art.