Police are appealing for witnesses to an armed robbery on Main Street, Bulwell.
A security van was in the Wilkinson store car park at around 11.20am today (Monday) when it was targeted by three offenders in a black Peugeot 206.
The van driver was threatened with a knife and punched and a cash bag was taken.
The Peugeot collided with a silver Mercedes as it left the scene, heading in the direction of Tesco.
Anyone with information should call Nottinghamshire police on 101 or Crimestoppers anonymously.
The robbery took place at he rear entrance to the store, which also contains a Post Office.