A spokesman said: "We have recently had numerous reports of young people sharing sexual, naked or semi-naked images of themselves, also known as sexting.

"Therefore, were urging parents to talk to their children about the dangers of sexting as it could lead to embarrassment, blackmail or even a criminal record.

"We know talking about sexting with your child may feel uncomfortable or awkward but it is incredibly important to discuss the risks, teach them how to stay safe and explain how these reports can use up valuable police investigation time."

The spokesman advised: "Talk about the Granny rule would you want your Granny to see the image youre sharing?

"Talk about whether a person who asks for an image from you might also be asking other people for images.

If children are sending images to people they trust, they might not think theres much risk involved. Use examples of when friends or partners have had a falling-out and what might happen to the images if this happens."