Plans have been revealed for a memorial for victims and survivors of the four terror attacks in London last year.
People will be able to leave messages in a digital book of hope at City Hall from Thursday, a year since Khalid Masood ploughed into pedestrians on Westminster Bridge before fatally stabbing unarmed police officer Keith Palmer.
Members of the public will be able to send messages to the installation - which will remain open until June - using #LondonUnited on social media, and their words will be projected on to a map of the capital.
The tribute has been set up to mark the four terrorist atrocities that took place in the city last year - at Westminster Bridge, London Bridge, Finsbury Park and Parsons Green.
The phrase #LondonUnited will be projected on to the Houses of Parliament, London Bridge, Finsbury Park Mosque and Parsons Green Tube station on the anniversaries of the attacks.