A female couple were battered by a gang of four men after they refused to kiss "for their entertainment" on a London night bus.

Four arrests have been made in relation to the attack, the Met Police said in a statement.

The males, aged between 15-18, were taken into custody on suspicion of robbery and aggravated GBH.

Melania Geymonat, 28, and her girlfriend Chris had been on a date in the capital last Wednesday and were heading home on the top deck of the bus when the men started abusing them.

When they refused to kiss at the demand of the gang, they were viciously attacked. They were also later robbed of a phone and a handbag.

Prime Minister Theresa May has condemned the assault. She said: "This was a sickening attack and my thoughts are with the couple affected.

"Nobody should ever have to hide who they are or who they love and we must work together to eradicate unacceptable violence towards the LGBT community."

In a post on Facebook, Ms Geymonat - who worked recently as a Ryanair air hostess and is originally from Uruguay - said: "I’m tired of being taken as a sexual object, of finding out that these situations are usual, of gay friends who were beaten up just because.