RNLI volunteers race to save two paddleboarders being swept into a shipping lane, search for a missing fisherman and abandon a crewmate's wedding when the pager calls.
RNLI volunteers race to rescue a porpoise stranded by the outgoing tide on The Wirral coast, a teenage wedding guest trapped by the tide on a rocky outcrop and the crew of a fishing boat on fire off the Cornish coast.
RNLI volunteers race to rescue a paddle-boarder being blown out to sea by strong winds, a man who has fallen overboard from a yacht and two 13-year-old girls trapped on a sandbank and at risk of drowning.
The volunteers of the RNLI race to save a sinking schooner and a walker with a broken leg, while cries for help in the early hours of the morning lead to an eerie night-time search.
RNLI volunteers race to save a stricken fishing boat in a force-eight gale, a yacht trapped on a weir in Loch Ness and a puppy that has swallowed a fishing hook.
The RNLI volunteers race against time to try and save three people in the water in the Bristol Channel, a father and son trapped against a cliff face and a badly injured sailor.
RNLI volunteers race to save a family trapped in their car which is slowly being engulfed by the sea, two kayakers close to drowning and a fossil hunter who has been cut off by the tide.
The RNLI volunteers face a search in one of the worst storms in living memory, race to save three people caught in a rip current and two men stuck on the anchor chain of an oil rig.
The Lymington lifeboat crew search for a missing kite surfer in the Solent. The Poole crew are called out to rescue a father and daughter swept out to sea. The Chiswick crew attempt to save an unusual casualty in the river Thames.
Off the coast of North Wales, a teenage paddle-boarder has lost his board and is being swept out to sea. The crew at Lizard in Cornwall are called to a cargo ship taking on water. They also attend a small yacht caught in an Atlantic storm.