Police are appealing for witnesses after a man was violently shoved to the floor after bumping into another commuter at London Bridge station.

The 40-year-old victim, who lives in Purley, had come down the escalators and was walking towards one of the London Underground entrances when he bumped shoulders with another man walking in the opposite direction.

As the victim continued walking, the man turned around and violently shoved him in the back, causing him to fall to the floor and injure his shoulder, preventing him from getting up.

British Transport Police have released CCTV images of a man and woman they wish to speak to in connection with the incident, which happened at about 7.53pm on Thursday, April 12.

The woman was seen walking alongside the man after the attack and could hold key information about the incident.

PC Shell Devito investigating said: "This violent and unprovoked attack left the victim dazed on the floor and with a serious injury to his shoulder, preventing him from being able to get up without assistance.

"We've made a number of local enquiries into this incident and are keen to speak to anyone with information, particularly if they recognise the man pictures in the CCTV image.

"We'd also like to speak to the woman pictured because while she played no part in the incident, she was seen walking away with the man afterwards and could have vital information about what happened."

Anyone with information should contact BTP on 0800 40 50 40 quoting reference B3/LSA of 11/05/12. Alternatively contact Crimestoppers anonymously on 0800 555 111.