A clubber needed 25 stitches to his face after being bottled in a vicious unprovoked attack.
Detectives have released CCTV footage of a man they want to speak to over the assault in Basing House nightclub, Kingsland Road, Shoreditch, in the early hours of Sunday September 6 last year.
Police say a man bumped into the 32-year-old victim before attacking him with a bottle, leaving him with serious cuts.
Bouncers threw the suspect out and the victim was taken by cab to hospital, where he stayed for two days.
Police want to hear from anyone who may recognise the man shown in the CCTV footage or who witnessed the assault.
Anyone with information is asked to contact investigating officer DC David Leitner on 07825 793 215 or Crimestoppers anonymously on 0800 555 111, quoting reference 194451.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here