RMHWWF34–London, UK. 23rd Mar, 2017. Policemen stand guard near the Houses of Parliament in London, Britain on March 23, 2017. Credit: Han Yan/Xinhua/Alamy Live News
RMHW0MMC–Westminster Bridge, London, UK. 23rd Mar, 2017. Westminster Bridge is taped off and crime scene after the terrorist attack Credit: Matthew Chattle/Alamy Live News
RMHWWEP3–London, UK. 23rd Mar, 2017. All Religious Leaders give statement outside New Scotland Yard. London UK Credit: dpa/Alamy Live News
RMHWWEY8–London, UK. 23rd Mar, 2017. A Policeman lays flowers brought by the public in whitehall following yesterday's attack in which one police officer was killed. Credit: Thabo Jaiyesimi/Alamy Live News
RMN00C23–London, UK. 23rd Mar, 2017. Banners at Trafalgar Square for the candle vigil Credit: Ilyas Ayub/StockimoNews/Alamy Live News
RMHX4K33–London, UK. 23rd Mar, 2017. Two women light candles in Trafalgar Square, following a vigil to remember the victims of the Westminster terror attack. A crowd of hundreds gathered in the square, lighting candles and listening to speeches. Credit: Jacob Sacks-Jones/Alamy Live News.
RMHWWF9M–London, UK. 23rd Mar, 2017. In the wake of yesterday's terror attack, Mayor Sadiq Khan adds extra police patrols to the streets of London. Here two policeman stand outside one of the last remaining Police Boxes in the UK, outside Earl`s Court Station-the much visited Tardis of Doctor Who Credit: Brian Minkoff/Alamy Live News
RMHWWEDW–London, UK. 23rd Mar, 2017. Polish conservative Law and Justice Party leader and Eurosceptic Jaroslaw Kaczynski (C) arrives at 10 Downing Street for talks with British Prime Minister Theresa May. Credit: Paul Davey/Alamy Live News Credit: Paul Davey/Alamy Live News
RMHW0N7H–London, UK. 23rd Mar, 2017. Defence Secretary Michael Fallon is interviewed by the media after the terror attacks in Parliament Credit: amer ghazzal/Alamy Live News
RMHWWG7J–London, UK. 23rd Mar, 2017. Londoners gather in Trafalgar Square for a candlelit vigil following the terrorist incident at the Houses of Parliament yesterday. Credit: Stephen Chung/Alamy Live News
RMHWWCGG–London, UK. 23rd Mar, 2017. London Fog, 2017, by Fujiko Nakaya (pictured). Tate Modern presents BMW Tate Live Exhibition: Ten Days Six Nights running from 24 March – 2 April 2017. Credit: ukartpics/Alamy Live News
RMHWWG2C–London, UK. 23rd Mar, 2017. General view at the Candlelit vigil for the victims of the terror attack held in Trafalgar Square Credit: WFPA/Alamy Live News