Pop star Lily Allen has been involved in a fight outside a London nightclub - she was photographed punching a passer-by in a furious rage.

The Smile hitmaker's scuffle was caught on camera as she left Ronnie Scott's jazz club in the early hours of Tuesday morning.

Allen was filmed walking along the street when a female passer-by called her a "f**king a**ehole."

The star retaliated, and shouted: "Yeah, come and say that to my face you f**king c**t.

"Where is that b**ch man? I'll f***ing batter her."

Allen then approached the woman, punching her several times in the back of the head, before adding: "Violence is bad."