The CCTV images were taken on 17 December 2016, ten days prior to the actual robbery on 27 December when police were called at around 6:40pm to a robbery at Turquoise Jewellers on London Road.
Officers attended and found the manage, a 45-year-old man, suffering from head and facial injuries. He was taken to an east London hospital for treatment and has since been discharged.
It was established that two men entered the store, and, after observing the jewellery, assaulted the manager. He was punched several times in the face and over the head, before being tied up.
The two men then emptied the shop and contents of the safe, with the overall value taken believed to be more than £50,000.
A third suspect stood outside the shop as a lookout on his mobile phone and then entered the shop and left soon after with the other two suspects carrying bags laden with the shop’s contents
The first suspect is described as a white man with a black beard wearing a grey bobble hat, dark blue jacket with a tartan hessian laundry bag over his shoulder, dark trousers and black trainers.
The second is described as a white man with a black beard wearing a dark body warmer over a grey top, a dark bag across his waist, grey jogging bottoms and dark trainers with yellow soles, while the third as a stocky white man with a beard wearing a grey hooded top, grey trousers and white trainers.
Detective Constable Andy Davenport, of the Metropolitan Police’s Flying Squad, said: “This is a shocking incident that has left the victim very traumatised after his ordeal. We are keen to identify the three men in the CCTV footage so we can speak to them about the incident.”
He urged anyone with information to contact police on 101, via Twitter on @Metcc, or Crimestoppers anonymously on 0800 555 111.