In relation to underaged sexual intercourse, A BBC legal site quotes the following:
“The law sees it as sexual assault - it's a criminal offence. This is because in the eyes of the law we are unable to give informed consent to sex when still a child.
A boy who has sex with a girl under 16 is breaking the law. Even if she agrees. If she is 13-15, the boy could go to prison for two years.”
Jemma and Stonehill agree they had drunken sexual intercourse a couple of months after her 14 birthday. Jemma was 13 and Stonehill was 15 when they first met.
This was used as evidence by the CPS, to dispute Jemma's claim in the trials against Cassim, where she was asked "have you ever had consensual sexual activity with a male", to which she replied "no".
Legally, at the age of 14, she could not give consent.
Jemma's response is accountable for two of the four Cassim charges against her.
There are numerous inconsistencies and contradictions within both of Stonehill's statements, that cast doubt on his evidence.
Source:
http://www.bbc.co.uk/programmes/articles/4hPrqzTRSBvvzHkTckNYNZ5/age-of-consent
Police : Jemma Beale Interview Statements
Police : Ben Stonehill Statement : 3 July 2014
Police : Ben Stonehill Statement : 5 July 2014