It is unclear why three trans women and their mother-of-four friend violently attacked a man.

Axar.az reports citing Sputnik that the video footage showed the group stamp on their victims before the underground staff attempted to hold them back.

A group of transgender women rushed back to kick and hurt the man lying on the ground and had to be pulled off his body by members of the Transport for London (TfL) workers.

The three transgender women — Tylah-Jo Bryan, Amarnih Lewis-Daniel and Michael O'Doherty — who goes by the name Tamzin Lush — assaulted the man first. Their friend Hannah Bryan, 22, also joined in the attack.