After seeing the man standing in front of her had an image of a woman’s bare legs and crotch on his phone screen, she realised it was of her.

She thought quickly and grabbed the phone, giving it to the festival staff, who called the police.

The police arrived and asked the man to delete the photo. However, five days later, Ms Martin was told the case was closed as the police said the man hadn’t broken any laws.

Ms Martin, a 25-year-old writer from London, started a petition to change this.

The campaign to make upskirt photos illegal under the Sexual Offences Act of 2003 has been signed by more than 53,000 people.