Thousands of human rights supporters flooded London's Trafalgar Square in solidarity with the Egyptian people's uprising.
"This means everything," said Cairo-born Sarah Abdel Gawad, draped in an Egyptian flag.
The teacher was one of the densely packed crowd assembled to celebrate President Mubarak's fall.
The 28-year-old mother of one said though Egypt's future might not be easy, it is paramount the people are allowed free and fair elections.
"And then if there are mistakes along the way, at least they are the mistakes of the people," she said.
"Over the last few weeks I haven't left the TV. All my family and friends back home were protesting. I wish I was there. Anything is possible after what we have seen."
The Amnesty rally - one of 46 held in 16 countries - was organised before Mr Mubarak resigned and was planned to help heap on pressure for change.
But, with speakers appearing on a stage and broadcast on the internet with a link to Cairo, the mood was one of celebration.
Salil Shetty, Amnesty's secretary general, told the crowd: "We are here to show solidarity with the people of Egypt who have achieved the impossible in a couple of weeks.
"Today, we want to send a resounding message from Trafalgar Square to Tahrir Square that we are in solidarity with the people of Egypt. Following Mubarak's exit I have been asked if today's event is a protest or celebration. I say it's both."