Ten of thousands of people are expected to march through central London on Saturday in a protest against Britain leaving the European Union.
Up to 40,000 people are due to gather at Park Lane at 11am for the 'March for Europe' before heading towards Parliament Square.
The march follows on from a similar rally, which took place earlier this week in Trafalgar Square.
The event was originally cancelled due to safety concerns and& heavy rain – but tens of thousands of people, including Liberal Democrat leader Tim Farron, turned up anyway.
Britain voted to leave the European Union in a referendum last week by 52 per cent to 48 per cent, although voters in capital strongly backed Remain by 60 per cent to 40 per cent.
Across the country, support for Britain to leave the EU was significantly lower in urban areas and among young people.
The disparity in the result among different demographics of society has prompted four million to sign a petition calling for a second referendum, and has resulted in renewed calls in Scotland for the country to leave the UK.
The rally’s organiser, King’s College graduate Kieran MacDermott, wrote: “We can prevent Brexit by refusing to accept the referendum as the final say and take our finger off the self-destruct button.
“It is the responsibility of parliament to consider our democracy more carefully and call for a vote before they all accept the UK's decline.
“Let's not leave the next generation adrift. We can provide the ammunition parliament needs to reason their way through this mess and reconsider Brexit, if we make a stand!
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“The power is still with the people and we can change things if we are organised and passionate in our response. Let's unite the remain voters and those who regret their vote to leave. Let’s turn this on its head.
“Dump work, cancel your shopping trip, bring your afternoon get togethers to the streets!
“Let’s march, let’s protest, and let’s stop Brexit!"
Some 36,000 people have already expressed an intention to attend the rally.
