蜜芽传媒

One of Britain's top Paralympic medal hopes, Bethany Woodward, has quit the competition over allegations that Team GB has wrongly classified some squad members.

UK Athletics is to investigate the classification of Paralympic track and field athletes over claims that some have been allowed to take the field against more impaired competitors.

Ade Adepitan, a former Paralympic wheelchair basketball player who will be presenting this year's Paralympic coverage on Channel 4, explains the classification system.

(Photo: Paralympic athletes running. Credit: Getty Images)