Bath duo Michael Jamieson and Andrew Willis won silver and bronze respectively in the men's 200 metres breaststroke.
Jamieson was beaten by Ross Murdoch who took broke the British record.
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The couple were driving from their wedding in Bristol to a hotel in Newquay when the snow hit.
Hundreds of schools have taken the decision not to open.
Heavy snow shut a 64-mile stretch of road between Exeter and Bodmin.