Police have released an image of a man they want to trace following a robbery in Islington on Tuesday, 2 July.
At around 15:00hrs, a man entered a supermarket on White Conduit Street, N1 where he threatened staff and demanded money from the till.
He claimed to have a bottle filled with acid and warned the female staff member not to make any calls to police.
He then left the premises on foot with a quantity of cash.
The man is described as a black male aged in his early 30s, around 5ft 6ins with a short scruffy beard which was black and grey in colour.
At the time of the incident, he was wearing a black cap with the word PRIDE written in different colours across the front of it and large, square sunglasses with black frames. He was also wearing a large and baggy black jacket.
Detectives are now releasing an image of a man they would like to speak to in connection with the incident.
Detective Constable Rob Griffiths, leading the investigation, said: “This was a terrifying incident for the victims which left them with significant financial loss.
“We believe that the man walked in the direction of Chapel Market, Islington and we are urging anyone who may recognise him to come forward and help prevent others from becoming victims of crime.”
Anyone with information is asked to call 101 with CAD 2240/11JULY2019 or Crimestoppers anonymously on 0800 555 111.