Police have released footage of the terrifying moment staff at a Tesco store in Camden were held at gunpoint by a man wearing a black mask.
Detectives are appealing for witnesses and information of the armed robbery in north London on October 1 at 5.40pm.
CCTVshows two men with their faces covered entering the supermarket on Camden Road.
While one brandished a handgun and pointed the weapon towards staff - who appeared to back away - the second suspect stole several items, put them in a plastic bag and ran away.
Forty minutes later, the same two men entered a Nisa Local on York Way - just a seven-minute walk from the Tesco - and carried out an identical armed robbery.
At around 3.20am on October 4 the pair entered the same Nisa store, this time accompanied by a third man.
The group waved a handgun, knife and hammer at members of the public inside the store before stealing goods.
The Metropolitan Police describe one of the suspects as Asian, 6ft tall and aged in his 20s. He was dressed in black, including tracksuit bottoms with grey pockets.
A second suspect is described as Asian, 5ft 7in tall and between 20 to 30 years old. He also wore all black, including a hoodie with a “MYPROTEIN” logo.
There is no description of the third man.
Detective Constable Will Wigzell from the Central Specialist Crime Flying Squad, is leading the investigation, and said: "This was a very frightening experience for the victims involved, thankfully none of whom were injured.
"These are very serious offences and we are keen to identify those responsible as soon as possible.
"Officers have carried out a number of inquiries and are now appealing to the public for assistance. Do you have any information that could help us? Do you recognise the males in the images?"
