Tube fight breaks out on London Underground train leaving elderly man unconscious

This is the moment a horrifying fight broke out between two London Underground train passengers, leaving an elderly man unconscious.

Footage posted online shows two men – one much older than the other – brawling on Monday night as a train on the District Line pulls into Aldgate East station in East London.

The video sees a man in his late 60s, wearing a red T-shirt, green hat and black coat, fighting with a younger man sitting next to him in a blue jacket, punching him twice in the head and in the groin…