The inaugural Big Chill Swim has taken place in Windermere. More than 200 people took part in total.
A variety of races took place, from endurance swimming to shorter charity events. The water temperature was just 4.6 degrees and competitors weren't allowed to wear wetsuits!
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29-year-old Matt Campbell collapsed after running 22.5 miles. He received medical treatment at the scene, but died later in hospital.