Outraging public decency

The accused engaged in "full anal and oral sex and masturbation," while the public watched.
A friend of mine, 25-year old Gina Martin, was enjoying British Summer Time festival in Hyde Park, London, when she caught a guy standing nearby looking at a photo of a woman's crotch on his mobile phone. To her horror, Gina realised that it was an up-skirt photo of her.