The Olympic swimmer Rebecca Adlington - who's from Mansfield in Nottinghamshire - says its great the swimming community has come together to support Great Britain swimmer Lewis Coleman who to raise money for acute lymphoblastic leukaemia.
Lewis's mother was diagnosed with the condition in 2012 and has gone on to have a bone marrow transplant.
The Olympic gold medal winner Rebecca Adlington has swum her way to a Guinness World Record in a charity swim. She and fellow Olympians Michael Jamieson, Fran Halsall and Karen Pickering swum a 100 x 100m relay in 1 hour and 29 minutes. The old world record for the swim stood at 1 hour 37 minutes.
The swimmers raised more than £20,000 for the blood cancer charity Leukaemia & Lymphoma Research.