James Conway (22) was sentenced to 240 hours’ community service and was ordered to pay £500 compensation to the victim.
The unprovoked attack happened at the Weighbridge taxi rank on 9 December after Conway had left a party.
Deputy Bailiff Michael Birt said that it had been an attack without any provocation and that both Conway and his victim were fortunate that he had not suffered more serious injuries.
The court accepted that it was out of character and was satisfied that Conway, described by his lawyer as ‘a model citizen’ was genuinely remorseful.
He resigned from his job in the trust department of a law firm following the assault.