Hundreds of thousands descend on London in anti-Brexit march

A mass gathering of anti-Brexit demonstrators is taking place in central London, calling for another EU membership referendum, as British MPs struggle to find a way out of the Brexit impasse.

Hundreds of thousands of demonstrators from the "Put It To The People" campaign are marching from Park Lane to Parliament Square, before rallying in front of Parliament.

The march comes after the EU agreed to delay the UK's departure from the EU.

Demonstrators will be addressed by Labour politician Tom Watson, Scotland's First Minister, Nicola Sturgeon, London Mayor Sadiq Khan, former Tory turned independent MP Anna Soubry and former attorney general Dominic Grieve.

The drone photo Met Police didn't want me to take #PeoplesVoteMarch #PutitothePeople #PeoplesMarch #RevokeArticle50march pic.twitter.com/MSWsHwHFQa

— Bob (@bob_london) March 23, 2019

London Mayor Sadiq Khan tweeted a video of himself at the front of the march whilst holding up a 'Put it to the People' banner. Also present was Liberal Democrat leader Vince Cable, who tweeted that there was a "huge turnout of people here from all walks of life".

British Prime Minister Theresa May has said she will do away with plans for another vote on her Brexit deal if not enough MPs support it.

Failure to pass that deal through Parliament will mean that the UK will have to come up with an alternative plan or else face leaving without a deal on 12 April.

Well said Alan. #RevokeArticle50 #PeoplesVoteMarch pic.twitter.com/PZSEsC0706

— Mark Brown (@MarkACBrown) March 23, 2019

Meanwhile, a record-breaking online petition hosted on the UK Parliament's website, which calls for Brexit to be cancelled has attracted more than 4.3 million signatures.

As the number of signatures on the petition continued to rise, its creator Margaret Georgiadou told reporters that she had received multiple death threats over the phone and a "torrent of abuse" via her Facebook account.