An image released by the Metropolitan Police in Richmond showed the man they are now hoping to speak with brandishing what appeared to be a baseball bat.
Without providing a time, police said the incident in question happened on Upper Richmond Road.
They said that the man pictured in the image “allegedly fractured a victims arm with a baseball bat, requiring surgery”.
He reportedly drives a black BMW convertible.
“If you recognize this male or know his whereabouts call police on 101 with reference to FIMS 59530,” police said in their appeal posted to Twitter.