Police are appealing for a 'key witness' in the investigation of a serious sexual assault in Carlisle.
A woman was assaulted in the early hours of 5 November, in the car park of the English Gate Plaza near Botchergate, at the rear of the Ibis Hotel.
A 30-year-old man has been arrested in relation to the incident and is currently on police bail until 29 December.
Police would like to speak to the woman pictured in the CCTV as they believe she may be a key witness.
If you recognise the woman, contact 101 or call Crimestoppers anonymously on 0800 555 111.