A group of six soldiers have been braving the chilly depths of Shepperton Lake in Middlesex for the past five days, to raise money for their injured comrades.
Night and day, the five men and one woman have powered a total of 250 miles - among them, Trooper Clifford O'Farrell, who nearly lost his legs in a blast in Afghanistan.
Our reporter Sharon Thomas joined the team as they swam into the record books:
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A bright and sunny day tomorrow, but feeling distinctly cool and chilly tonight.
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