Teenage girls in London are increasingly being pressured to hide guns for boyfriends, brothers or male friends who are gang members.

But not only do they put others in danger - anyone caught hiding a gun for someone else can expect to receive a five-year prison sentence.

This radio, cinema and OOH campaign for Trident, the Metropolitan Police's anti-shooting unit, carried the message: "Hide his gun and you help commit the crime" is being launched by .