James was convicted of three counts of rape, three of sexual activity with a child, and two counts of causing a child to engage in sexual activity.
Gemma Kneebone, of the Crown Prosecution Service, said: “Antony James manipulated and controlled his teenage victims to fulfil his own sexual desires.
Antony James, 35, who represented Great Britain at the 2012 London Games in the 100m butterfly, groomed the girls before assaulting them, Plymouth crown court heard.
He said James had risen to the “pinnacle of the sporting world”, representing his country at European, Commonwealth and world level as well as at the Olympics, and had broken British records.
Antony James, from Plymouth, who competed in 2012 Games, was a student police officer at time of his arrest.
