Police would like to speak to the man pictured after a man was allegedly assaulted at a pub in Heanor suffering a cut to his face.
A police spokesman said: "Officers investigating an alleged assault outside a pub in Heanor would like to speak to him as he may be able to help."
The incident happened between 11pm and 11.15pm on Saturday, June 23 outside the Mundy Arms on Ilkeston Road.
A man was allegedly assaulted by a group of two men and two women, and suffered a cut to his face.
Do you recognise the man in the image, or have any information which could help with inquiries?
If so, please call PC Grant Weller on 101, quoting reference 18*291474, or send him a message online through the Contact Us page of the website, by clicking here.
Alternatively, you can contact the independent charity Crimestoppers anonymously on 0800 555 111 or online at www.crimestoppers-uk.org