A veteran saloon car race driver is involved in a horrific crash on the finish line, two pals fish a hand grenade out of a river, and a young boy alerts his mum to a car fire.
A family is trapped 50 metres up on a tourist attraction, and a young rock climber disobeys his dad, with terrifying consequences.
A top British surfer rides the wave of his life, two little girls call for help when their dad collapses, and a mum and daughter find their tumble drier on fire. Show more
A group of hikers are enjoying a day on Dartmoor when one falls, landing on rocks below, and a young couple and their baby flee a hotel fire after a fellow guest alerts them.
Two young men are attempting to set a world record rowing the Atlantic when a freak wave capsizes their boat, and a family day out in the snow almost ends in tragedy. Show more
Nick Knowles tells the story of two young students mowed down in a hit-and-run, captured on CCTV. And a lone climber on Snowdon takes a tumble. Show more
Nick Knowles examines the extraordinary rescue of a young man missing overnight after being swept out to sea on his surfboard. Show more
Nick Knowles presents close calls caught on film. A frantic mum calls 999 when her seven-year-old daughter suffers a cardiac arrest. Show more
Nick Knowles presents close calls caught on film. A mountain biker crashes head first at a jump and an off-duty rescue worker comes to his aid. Show more
Nick Knowles presents close calls caught on film. A retired policeman comes to the aid of a young man after his car careers off a ferry and sinks in the harbour. Show more
Nick Knowles presents close calls caught on film. An amateur racing driver loses control on the track and his car somersaults towards the crash barriers. Show more
Nick Knowles presents close calls caught on film. A man is thrown from his vehicle and lands in the middle of a busy motorway after a tyre blowout in the fast lane. Show more
Nick Knowles presents close calls caught on film. Mountain rescue workers and an RAF helicopter come to the aid of a man hiking in the Cumbrian hills. Show more
Nick Knowles presents close calls caught on film. Two best friends on a holiday fishing trip are lost at sea, and their wives fear the worst. Show more
A worker is trapped under his dumper truck when it topples and rolls on top of him, and a racing driver's brakes fail, sending him somersaulting along the track. Show more
A family break down on a busy road with no hard shoulder, and a lorry driver fails to see them. Plus a speedboat trip nearly ends in tragedy. Show more
A fishing trawler is sinking off the Shetland Islands, and one of the rescuers discovers his close friends are on board. Plus a little boy is trapped in a tumble dryer. Show more
Nick Knowles presents close calls caught on film. A young couple out walking on a pavement are hit by an out-of-control car, and a mum calls 999 when her baby is unresponsive. Show more