Advice on emotions and relationships should be made a compulsory part of sex education in schools, the children's charity NSPCC says.

It said nearly 50 children a day were calling its Childline helpline because they felt under pressure to have sex.

Schools minister Jim Knight announced a government review in February of how sex education is taught in England.

As the law stands, schools in England only have to teach the biological aspects of sex.

The charity said that too many children were getting involved in sexual situations they could not handle. Continue reading: 'Emotions' urged in sex education