This is the astonishing moment the two Russian novichok assassins casually window-shopped in Salisbury just minutes after they tried to murder former double agent Sergei Skripal and his daughter.
The first footage seen of the killers, obtained exclusively by MailOnline, shows the two men looking relaxed and good-humoured as they sauntered down the street towards Salisbury station to make their getaway.
Dressed in winter clothing, Alexander Petrov and Ruslan Boshirov are seen walking past the Dauwalders collectibles and rare stamp shop before becoming distracted by the window display.
Petrov is wearing a backpack, black woolly hat and blue down coat, while Boshirov is wearing a dark bomber jacket and a baseball cap.
Appearing to forget about their mission, they examine the window display in detail, talking enthusiastically about the collectors' items.
They then approach the shop entrance as if to make a purchase, before realising that the shop is closed and continued towards Salisbury railway station and make their escape.
This is the astonishing moment the two Novichok assassins casually window-shopped in Salisbury just minutes after smearing poison on the Skripals’ doorknob
Something in the shop display caught Alexander Petrov's eye (dressed in woolly hat and a blue coat) and he stopped fellow assassin Ruslan Boshirov (in the cap)
Petrov speaks into his fellow assassin's ear as they look at the window display Dauwalders collectibles stamp and coins shop
The pair then look up at the shop door as they appear to be considering going inside to look more closely at the item they have been examining
Petrov seems to head towards the front door on the shop before realising that the premises are closed and the men continue walking towards Salisbury railway station to catch a train back towards London
The two Russian spies being sought over the Novichok poisoning in Salisbury carried passports with the names Alexander Petrov and Ruslan Boshirov - but police say that these are unlikely to be their real names
The exclusive footage provides an insight into the relaxed mindset of the two assassins – who the Prime Minister has said worked for Russia’s GRU military intelligence service – just minutes after they carried out attempted murder.
While the pair window-shopped, former spy Sergei Skripal and his daughter Yulia were just hours away from becoming hospitalised, in a chain of events that would lead to the death of drug addict Dawn Sturgess, 44, and a new low in relations between Russia and Britain.
By the following day the killers would be back in Russia while police frantically sealed off contaminated parts of Salisbury and the manhunt began.
It would be a further six months before their identities would finally be made public by the British authorities.
It comes as Britain's security minister today said Russian President Vladimir Putin bears ultimate responsibility for the Novichok nerve agent attack carried out in England.
Britain has vowed to wreak revenge on the Russian President by ordering a covert war as the Prime Minister accused two of his agents of carrying out the mission in March.
Security Minister Ben Wallace said today he is '100 per cent sure' the men named carried out the attack and claimed that Vladimir Putin has ultimate responsibility for the actions of his spies - but added: 'This was more Johnny English than James Bond'.
The exclusive footage provides an insight into the relaxed mindset of the two assassins – who the Prime Minister has said worked for Russia’s GRU military intelligence service – just minutes after they carried out attempted murder
Just a few minutes before this footage was recorded at 1.49pm on Sunday March 4 the two men had allegedly sprayed Russian nerve agent Novichok on the door handle at the home of double agent Sergei Skripal and his daughter Yulia in Salisbury
The men arrived in the UK on Friday March 2 and stayed at the City Stay Hotel in Bow, east London. They visited Salisbury on Saturday March 3 for a few hours before going to the Wiltshire city for a second time on March 4 when this footage was taken
He said: 'Ultimately he does, insofar as he is president of the Russian Federation and it is his government that controls, funds and directs the military intelligence - that's the GRU - via his minister of defence. I don't think that anyone can ever say that Mr Putin isn't in control of his state'.
He added: 'They [the assassins] are members of the GRU - this is not some rogue or some