A 28-year-old man was headbutted by a motorist in a driving dispute.
The assault happened at about 9am on Friday in Park End Street.
Police are seeking information on the attacker, who they say is a white man in his 40s with short, grey hair.
He was driving a small white van.
Call police on 101 or the Crimestoppers charity anonymously on 0800 555111 if you have any information.
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