Today (March 22) marks one year since the Westminster terror attack, and many have been spreading messages of remembrance and hope on social media.
Many are using the hashtag #LondonUnited which means their messages will be sent to the memorial for last year's London terror attack victims.
MPs in Parliament held a one-minute silence to remember those who were killed in the Westminster attack, when Khalid Masood drove into pedestrians on Westminster Bridge.
He then fatally stabbed unarmed police officer Keith Palmer. Kurt Cochran, Andreea Cristea, Aysha Frade and Leslie Rhodes also died as a result of the attack.
The phrase 'London United' wil be projected at four locations in the capital, and events are also being held to remember the victims, the Evening Standard reported.
Twitter users have said their thoughts are with those who were affected by the attack last year, and also praised the bravery of the emergency services.
Take a look at the reaction below