• One of the biggest surprises of Britain's election night has been the gains seen by the right-wing Reform UK party.
• The party won four parliamentary seats. In terms of vote share, finished in third place with 14% of the total vote.
• In a video posted on X titled: "The revolt against the establishment is underway," Farage said the gains his party had seen were "almost unbelievable."

LONDON — One of the biggest surprises of Britain's election night has been the gains seen by the right-wing Reform UK party, which won four parliamentary seats and logged a strong showing in the total vote share.

Exit polls had initially indicated that the populist party led by Brexiteer Nigel Farage could win up to 13 seats in the U.K.'s parliament, an unexpectedly large number given it failed to secure any in the 2019 general election. By the morning, it had won four including Farage's, who's set to become a member of the British parliament for the first time ever.

In terms of vote share, however, Reform finished in third place with 14% of the total vote.

In a video posted overnight on X titled: "The revolt against the establishment is underway," Farage said the gains his party has seen so far are "almost unbelievable.

"What does it mean? It means we're going to win seats, many, many seats," he said. "Mainstream media are in denial, just as much as our political parties."

Reform UK, which has a hardline stance on immigration, was born out of the Brexit Party. The latter was founded by Farage and focused on calling for a "no-deal Brexit" between 2016 and 2021; after the completion of the Brexit process, it campaigned on issues such as opposition to Covid-19 lockdowns.

Farage, who has served in the European Union parliament but repeatedly failed to win a seat in the U.K. legislature, stepped down as party leader in March 2021. After previously stating he would not stand as an MP in 2024 in order to focus on supporting Donald Trump's U.S. presidential campaign, he reversed course in June and said he would both stand and resume his role as Reform UK leader.

Numerous analysts argued that the return of the well-known figure would boost the party at the expense of the Conservatives.

David Bull, co-deputy leader of Reform UK, told the BBC overnight that pollsters had underestimated the party's support, as they had with the number of people who would back a Brexit vote.

"I think what you're seeing is actually the shy Reformers coming out in droves. We saw this with Brexit didn't we, the shy Brexiteers, so the pollsters were caught off-guard and once again they've been caught off guard," Bull said.

A "shy" voter refers to someone who does not reveal in polls which way they will eventually vote.