Mayor of London Sadiq Khan speaks as Home Secretary Amber Rudd MP and acting Commissioner of the Metropolitan Police Craig Mackey look on during a...
Man lays flowers during a candlelit vigil at Trafalgar Square on March 23, 2017 in London, England. Four People were killed in Westminster, London,...
Postcard is left amongst candles during a candlelit vigil at Trafalgar Square on March 23, 2017 in London, England. Four People were killed in...
London Mayor Sadiq Khan, British Home Secretary Amber Rudd and Acting Commissioner of the Metropolitan Police Service Craig Mackey lead a vigil in...
Flowers on Westminster bridge in central London on March 23, 2017 in solidarity with the victims of the March 22 terror attack at the British...
Acting Commissioner of the Metropolitan Police Craig Mackey, Home Secretary Amber Rudd MP and Mayor of London Sadiq Khan light candles during a...
Postcard is left amongst candles during a candlelit vigil at Trafalgar Square on March 23, 2017 in London, England. Four People were killed in...
Two Metropolitan Police officers look on during a candlelit vigil at Trafalgar Square on March 23, 2017 in London, England. Four People were killed...
British Opposition Labour Party leader Jeremy Corbyn pauses after laying a bunch of flowers in honour of the victims of the March 22 terror attack at...
Mayor of London Sadiq Khan speaks as Home Secretary Amber Rudd MP and acting Commissioner of the Metropolitan Police Craig Mackey look on during a...
Members of the public light candles during a candlelit vigil at Trafalgar Square on March 23, 2017 in London, England. Four People were killed in...
Assistant Commissioner Mark Rowley of the Metropolitan Police makes a statement outside of New Scotland Yard on March 24, 2017 in London, England. A...
Woman holds a placard up during a candlelit vigil at Trafalgar Square on March 23, 2017 in London, England. Four People were killed in Westminster,...
Pile of floral tributes to the victims of the March 22 terror attack in Westminster are seen at the north end of Westminster Bridge by the Houses of...
Mayor of London Sadiq Khan speaks during a vigil in Trafalgar Square in central London on March 23, 2017 in solidarity with the victims of the March...
Flowers on Westminster bridge in central London on March 23, 2017 in solidarity with the victims of the March 22 terror attack at the British...
Police officer arrives with floral tributes on Westminster Bridge following yesterday's attack in which one police officer was killed on March 23,...
British Transport Police officers pause after laying floral tributes on Westminster Bridge following yesterday's attack in which one police officer...
Police officers in forensics suits work in Parliament Square following yesterday's attack in which one police officer was killed on March 23, 2017 in...
Royal Parks police officers lay flowers as a mark of respect to officer Keith Palmer, at the National Police Memorial, following the terror attack at...
Man pauses in front of floral tributes laid in honour of police officer Keith Palmer, who was killed during the March 22 terror attack in...
Prime Minister Theresa May leaves Downing Street on March 23, 2017 in London, England. The British Prime Minister Theresa May spoke last night after...
Police forensic officers work on Westminster Bridge following yesterday's attack, on March 23, 2017 in London, England. Four people have been killed...
Police forensic officers work on Westminster Bridge following yesterday's attack, on March 23, 2017 in London, England. Four people have been killed...
Police in forensic suits search the a grassed area in Parliament Square outside the Houses of Parliament in central London on March 23, 2017 the day...
Police and media work outside the flat, above Shiraz Restaurant, in Hagley Road, Birmingham, which was raided by anti-terror police in connection...
Police search team enters a flat above Shiraz Restaurant, in Hagley Road, Birmingham, which was raided by anti-terror police in connection with the...
Police van is parked outside a residential building in Birmingham which was raided by anti-terror forces in the early hours on March 23, 2017. Seven...
Police officers request members of the press to move away from a residential building in Birmingham which was raided by anti-terror forces in the...
Couple prepare to pose for their wedding pictures by Westminster Bridge in central London on March 23, 2017 after the bridge reopened to traffic...
British police officers bow their heads as they stand near a police cordon directly ourside New Scotland Yard and within sight of the Houses of...
Man pays his respects before floral tributes layed underneath the list of the fallen at the National Police Memorial in central London on March 23,...
Former Labour leader Ed Miliband consoles a police officer in Whitehall on March 23, 2017 in London, England. Four people have been killed and around...
Police officers and staff pause outside the headquarters of the Metropolitan Police Service at New Scotland Yard in central London on March 23, 2017...
Man lays flowers outside New Scotland Yard following yesterday's attack in which one police officer was killed on March 23, 2017 in London, England....
An armed British police officer patrols in Horse Guards Parade as tourists watch after the terror attack at Westminster in central London, U.K., on...
Floral tributes with a message reading "We are not afraid, our hearts are with you" are seen near a police cordon in Westminster in central London on...
Police officer lays flowers on Whitehall around a photograph of police officer Keith Palmer who was killed in the March 22 terror attack in...
Armed British police officers speak with a colleague in the Westminster district of central London, U.K., on Thursday, March 23, 2017. Parliament...
Police stand guard outside Westminster Abbey after the terror attack at Westminster in London, U.K., on Thursday, March 23, 2017. Parliament will...
Police officers patrol during rush hour at Victoria station in central London on March 23, 2017. - Seven people have been arrested including in...
Floral tributes lay in front of the National Police Memorial following yesterday's attack in which one police officer was killed on March 23, 2017 in...
Armed police officers secure the area on Whitehall leading toward the Houses of Parliament in central London on March 23, 2017 the day after the...