Sports coaches and faith leaders who have sexual relationships with 16 and 17-year-olds in their care will be breaking the law under new legislation planned for England and Wales.

The move would put them on par with roles like teachers and social workers.

Children’s charity the NSPCC said it was a “landmark step” for the protection of young people.

It is among a raft of measures included in a bill which is due to be introduced in Parliament later.

Other provisions in the Police, Crime, Sentencing and Courts Bill include:

• Allowing judges to give Whole Life Orders for the premeditated murder of a child, as well as to 18 to 20-year-olds in exceptional cases such as for acts of terrorism which result in the mass loss of life
• Life sentences for killer drivers and powers to stop the automatic release halfway through a sentence for serious violent and sexual offenders
• New court orders to help crack down on knife crime and make it easier for police to stop and search those they suspect of carrying a knife
• Tougher punishments for the criminal damage of a memorial, with the maximum penalty set to increase from three months to 10 years

The government’s plans follow prolonged calls from campaigners for the so-called Position of Trust laws to be extended to cover other roles that have responsibility over young people.

While the age of consent is 16, it is illegal for those in some professions – such as teachers, social workers and doctors – to have a sexual relationship with 16 or 17-year-olds in their care.

Peter Wanless, chief executive of the National Society for the Prevention of Cruelty to Children (NSPCC), which campaigned for the law change, said it was “delighted” the government had agreed to “close this legal loophole”.

“This landmark step sends a clear message that children and young people can return to the extracurricular activities they love without being at risk of grooming by the very adults they should look to for support and guidance,” he added.