A delivery driver was robbed with an iron bar at Sunrise Enterprise Park on Monday.
The 44-year-old man was getting into his car at around 11pm after returning a company vehicle to a depot on Ferryboat Lane, when he was approached by two men, one armed with the bar.
He stumbled backwards and dropped an A4-sized envelope-style wallet containing money, which the robbers then made off with.
The man was left shaken but uninjured.
The robbers are both described as white. One was around 5ft. 5ins tall and wearing a beige hoody.
Northumbria Police are appealing for information and are keen to speak to any witnesses.
Anyone with any information is asked to contact police on 101 ext. 69191 and quote reference 1318 24/03/14, or Crimestoppers anonymously on 0800 555 111.