An investigation will be carried out into why a Kendal ear-biting incident took more than two years to get to court.
A judge at Carlisle Crown Court said the victim had been "let down" by the "unacceptable" delay.
Two men were sentenced earlier for the attack at Gooseholme in June 2015.
29-year old Stuart Grady, of no fixed address and 23-year old Dane Johnston, of Sparrowmire Lane in Kendal admitted assault causing actual bodily harm.
Grady got a conditional discharge; Johnston was told to do 100 days unpaid work.