Theresa May said Nigel Farage would not be able to “deliver” Brexit as she urged people not to back his party in the European elections.
Rallying support for the Tories, who are currently struggling in forecasts for the votes, she said only her party can “get the job done” on leaving the EU.
After this she went into a direct attack on Mr Farage, whose newly formed Brexit Party are backed as the election favourites ahead of the May 23 poll.
“Nigel Farage can’t deliver Brexit,” she said during a speech in Bristol.
“Every few years he pops up, he shouts from the sidelines. He doesn’t work constructively in the national interest.”
She urged voters to back the Tories and said: “Next Thursday I want people to vote Conservative.
“Because it’s only the Conservatives who can deliver Brexit and take this country forward into a brighter future.
“No one else can get the job done."
She then took aim at other parties and said: “Labour the Lib Dems and SNP have voted against delivering Brexit again and again.
"The Conservative Party didn't want to be fighting these. We wanted to be out of the European Union.
"Indeed if Parliament had backed our Brexit deal we could already have left the EU, but we're a national party, we fight national elections.”
It comes after the Tories dropped to single-digit levels of support with YouGov research putting them at being backed by nine per cent of voters.
Meanwhile the Brexit Party was on 35 per cent, according to the survey of more than 7,000 people.
Earlier in the day, cross-party Brexit talks between the Tories and Labour broke down after Jeremy Corbyn ended them.
The two main political parties had been negotiating since early April, in a bid to breach the impasse on the UK's next step for leaving the EU.
