China swimmer clean - UK official
31 July 2012 Last updated at 06:03 ET
The British Olympic Association's chairman has said teenage Chinese swimmer Ye Shiwen is not a drug cheat, after a US coach cast doubt on her world record-breaking swim.
Lord Colin Moynihan said Ye, 16, had passed drug tests, was "clean" and deserved recognition for her talent.
Ye smashed her personal best by at least five seconds in the 400m Medley.
A senior US coach said her time was "unbelievable" and hinted that doping could have been involved.
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