Update 24 March: The public has donated more than £400,000 to the JustGiving page for the family of murdered police officer Keith Palmer, 24 hours after it went live.
Stephen Redgewell, who set up the page, said: "A quick thank-you for all those of you that have made your generous gifts in memory of Keith."
Original story 23 March: The Metropolitan Police Federation has confirmed that more than £100,000 has been donated to the memorial fund for PC Keith Palmer, who was fatally stabbed as he protected parliament.
A spokesperson for JustGiving confirmed PC Palmer's page reached its £100,000 target in just over six hours, making it the fastest growing crowdfunding page in history. 5,500 members of the public made with donations and JustGiving also contributed £10,000.
"Every day, all over London and the rest of the UK, Police Officers risk their lives to protect and defend us - in the wake of this tragedy our thoughts are with Keith's family and all the people who are injured have lost their lives," a statement on the donation page reads.
The Metropolitan Police Federation thanked those who have made contributions. Police officers have also been leaving tributes around Westminster to their colleague, who joined the Met in 2011 and was married with a five-year-old daughter.
Further examples of generosity have also been reported. London's Air Ambulance, which played a key role in the immediate response to the Westminster attacks, has confirmed £10,000 was raised within 24 hours. In a statement released by the LAA, the charity's medical director Dr Gareth Davies said he had been "blown away by the generosity of Londoners".
And in an effort to show terrorism will not divide Londoners, Muslim United for London has raised over £11,000 for the victims of the attack since the LaunchGood page was launched on Wednesday.
"While no amount of money will bring back lives lost or take away from the pain the victims and their families are going through, we hope to lessen their burden in some way as citizens, Londoners, and human beings," the page reads.