Estimates indicate roughly one million people marched in London Tuesday during an anti-Brexit march, protesting the pending exit of the United Kingdom from the European Union.The protesters, carrying placards asking the government to revoke Article 50 and European Union flags, marched from Hyde Park Corner to Parliament. The mayor of London, Sadiq Kahn tweeted, "here in London, thousands of people from across our city and country have come together with @peoplesvote-uk to send a clear message: Enough is enough - it's time to give the British public the final say on Brexit."

There were several speakers at the rally, including Nicola Surgeon, Tom Watson and Sadiq Khan. Tom Watson called Theresa May's deal "lousy" and said he would only vote for it if the British people could also vote for or against it. Nicola Surgeon said it was "the moment of maximum opportunity" for stopping a no-deal Brexit.

Some of the protesters Wikinews interviewed said they had gone to, "defend [their] children's right to live and work in Europe" and "secure [their own] right to work in the EU". One interviewee said people change their minds and several said they wanted the politicians to stop ignoring them.

However, not everyone agreed there should be another referendum. One MP told the BBC "We know that 16 million people wanted to stay in the EU, and some of those would still like to stay in the EU, and within that quite a few would like to have another go and have another referendum - but it was always a minority".

In 2016, the United Kingdom held a referendum on whether to remain part of the European union, which it joined in 1973. About 52% of participating voters voted to leave and 48% to stay. The departure from the union involves negotiations over exactly what will be required of British citizens living in other EU countries and vice versa, the payment of fees, changes in the management of the border between Britain's Northern Ireland and EU member the Republic of Ireland, and other matters. So far, the British Parliament has not managed to agree on an official withdrawal agreement that would give the United Kingdom a means of transitioning out of EU law gradually. This means that, unless other measures are taken, the United Kingdom is scheduled to cease to be part of the union on March 29 at 23:00, and all EU law will immediately cease to be in effect within its borders.