A former Olympic swimmer has called for a transgender division in sport to create a "level playing field".
Sharron Davies has claimed sport was "all about biology", and suggested an open class division for trans and intersex athletes.
"I competed for 20 years against east Germans who were full of testosterone and a blind eye was turned to it for those years," she told talkRADIO's Julia Hartley-Brewer.
“There were many female athletes who lost places, medals and careers they shouldn’t have done because nothing was done about it."
Ms Davies' appearance on the breakfast show followed the news that fellow athlete, Caster Semenya, lost her legal battle with athletics' world governing body over its regulations restricting testosterone levels in women runners in selected events.
"It’s terribly unfair on Caster and it’s something she’s had to live with all her life but I also believe it’s not fair on the seven other people in the race who don’t get to compete on a level basis," Ms Davies said.
“No one wants sport not to be inclusive, but if we want a level playing field and we want 50 per cent of the population to compete in a fair environment then it needs to be biology based."
Words by Wesley Hudson