A man threatened staff at a petrol station with a knife while demanding money.
The man, who is believed to be in his early 20s, attempted to rob the petrol station on Hertford Road, in Enfield, on Friday, July 25 at around 9.25am.
The man is described as black, of slim build and approximately 6ft tall.
He was wearing a light grey hooded top and a maroon scarf that was used to cover his face.
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