Patrolling officers were first alerted to an incident outside of the nightspot Cargo in Rivington Street, EC2 in the early hours of Saturday 23 May 2009.
They immediately gave first aid to the victim, who was 26 years old at the time. He had been stabbed in the neck with glass and had suffered a deep cut to his throat.
He was taken to an east London hospital where he received treatment for the injuries.
Three men were arrested following the incident. Two were later released with no further action and the third, Anthony Lloyd Sue-Patt Jones, was charged with GBH with intent.