A participant competes in the 8th UK Cold Water Swimming Championships at Tooting Bec Lido in London on January 26, 2019. Over 800 swimmers from 14 countries competed in a variety of disciplines, including races wearing novelty hats. (Photos: IC)

A participant competes in the 8th UK Cold Water Swimming Championships at Tooting Bec Lido in London on January 26, 2019. Over 800 swimmers from 14 countries competed in a variety of disciplines, including races wearing novelty hats.

A participant competes in the 8th UK Cold Water Swimming Championships at Tooting Bec Lido in London on January 26, 2019. Over 800 swimmers from 14 countries competed in a variety of disciplines, including races wearing novelty hats.

A participant competes in the 8th UK Cold Water Swimming Championships at Tooting Bec Lido in London on January 26, 2019. Over 800 swimmers from 14 countries competed in a variety of disciplines, including races wearing novelty hats.