'Stop Donald Trump bus' tours London's streets

'It’s vital we mobilise this secret swing state so we can defeat Trump,' says campaigner

An ‘anti-Trump’ bus has taken to London’s roads filled with activists on a mission to get American expats to vote against the Republican nominee.

The red, open-topped double-decker bus was adorned with flags, balloons and posters branded with the message: "American Abroad: Vote to Stop Trump".

Activists on the bus used tablets to help Americans living in the UK to register to vote ahead of the elections on 8 November.

“It’s absolutely vital that we mobilise this secret swing state so that we can defeat Trump,” one campaigner told AFP.

Around eight million Americans live abroad, 220,000 of whom live in Britain, according to the organiser of the campaign, Avaaz.

Yet just 12 per cent of Americans who reside overseas vote.

Some 220,000 Americans live in Britain (Getty)

Activists are hoping that motivating expats to vote will bring election victory for their candidate.

Just 12 per cent of Americans who live overseas vote (Getty)

“We know that there are about eight million Americans abroad; we know that they tend to be progressive, but we also know that most of them don’t vote," Avaaz campaign director Meredith Alexander told Reuters.

Activists hope mobilising expats will bring election victory for their candidate (Getty)

"So this is a global get-out-to-vote drive to make sure as many Americans as possible register and vote to help stop Trump,”

According to a new NBC/Wall Street Journal Poll Hillary Clinton was ahead of Mr Trump on Wednesday by six points before of the first debate next week.

Ms Clinton has the support of 43 per cent of the likely voters, whereas Mr Trump has 37 per cent.