Dame Tanni Grey Thompson, Britain's most successful Paralympian, has announced her retirement. The 37-year-old will make her last appearance for Great Britain at May's Paralympic World Cup in Manchester.
Grey Thompson won 16 medals as a wheelchair racer from five Paralympics, including 11 golds, as well as six London Marathons - her last in 2002.
The Welsh star was made a Dame of the British Empire in the New Year's Honours list in 2005.
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