Police in London are appealing for witnesses and information following an assault in the Kings Cross area.
Detectives have also released an e-fit of a man they want to identify and speak to.
At approximately 5pm on 10 November 2018, the 70-year-old victim left a pub on Mabledon Place, WC1.
Once outside, he was almost struck by a cyclist who was riding without lights. The victim made a passing comment, the cyclist returned and pushed the man to the pavement.
The victim attended hospital where it was discovered that he had fractured his elbow.
The suspect is described as white, approximately 6ft tall, of medium build with short hair and stubble.
Detective Constable Rob Griffiths, from the Central North Command Unit, said: “This was an unnecessary and violent incident which left the victim with serious injuries, requiring surgery and permanent plates to be fitted in his arm.
“Despite extensive enquiries, we have been unable to identify the suspect. We are now appealing for the public to help. Do you recognise the man in the e-fit? Or were you in the area at the time of the assault? Please call us.”
Anyone with information is asked to contact the CID based at Islington police station via 101 or tweet @MetCC quoting reference CAD 2433/17Mar.
Alternatively, call Crimestoppers anonymously on 0800 555 111.