The car had crashed through the entrance of the shop, smashing the glass, and remained just inside the doors on Friday night as emergency services arrived at the scene.
Tina Bonev, who witnessed the crash, said it was "absolutely terrifying" and there had been "shock and confusion" in the aftermath.
Videos supplied to the BBC by eyewitnesses showed shoppers stood just metres from where the car had crashed into the store. Debris from the car and items from the shelves were strewn across the shop floor as an alarm sounded and a man shouted: "Everyone get out the store."
A woman could be heard asking: "Can anybody do first aid?"