Reform UK leader Nigel Farage won a seat in the town of Clacton with a majority of 8,405, becoming a member of parliament on the eighth attempt.
Farage won 21,225 votes and managed to beat the Conservative candidate, who got only 12,820.
"This Labour government will be in trouble within weeks," Farage told reporters after the results were revealed, adding that his Reform UK party intends to fill the "gap" in the center-right of British politics. "We're coming for Labour, be in no doubt about that," he concluded.