Two women say they were subjected to a homophobic attack and left covered in blood after refusing to kiss on a bus.
Melania Geymonat, 28, said the attack on her and partner Chris happened on the top deck of a London night bus as they were travelling to Camden Town.
A group of young men began harassing them when they discovered the women were a couple, asking them to kiss while making sexual gestures.
Four male teenagers aged between 15 and 18 have been arrested.
They are being questioned on suspicion of robbery and aggravated grievous bodily harm.