Richard Tice has rejected the idea of an election pact with Rishi Sunak as the Tories have been warned that they face an "extinction-level event".
Reform UK achieved their best ever by-election results on Thursday, with 13 per cent in Wellingborough and 10 per cent in Kingswood.
Both by-elections saw huge swings that led to Labour winning the seats from the Conservatives, sending alarm bells ringing through the Tory Party.
The leader of Reform claimed the Tories deserved to lose their jobs due to their "woeful performance".
Richard Tice has rejected the idea of an election pact with Rishi Sunak
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Tice wrote in the Daily Telegraph: "They cannot be trusted at their word, and we cannot reward failure with more incumbency.
"Tory MPs deserve to face redundancy for their woeful performance.
“Rishi Sunak says their plan is working. Some plan, as we have just slipped into recession and GDP per head has fallen for almost two years due to their mass low skilled immigration policies."
He then went on to urge the Tories to "stand aside" and allow Reform to take on Labour in the upcoming general election, in order to prevent the "grave threat of Starmergeddon".
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Reform UK recorded their best ever by-election results on Thursday
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He added: “This is why we will not be doing any deals with the Tories. We stand everywhere. Instead our intent is to work ever harder over the medium term to reshape the British political landscape.”
A source close to a group of Tory rebels warned the Government that they're facing an "extinction-level event".
The source told the Telegraph: "The reality is Labour are currently storming to a huge victory and we have an insurgent party on the right polling above 10 per cent.
"Cue Nigel Farage’s intervention two months out from a General Election and we’re facing an extinction-level event. It’s a slow-motion car crash.”
Rishi Sunak has been warned that his party is facing an extinction-level threat
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The MP for Morley and Outwood, Andrea Jenkyns, repeated her call for Sunak to be replaced as PM.
Taking to social media, she posted: “However difficult for fellow MPs we have no choice, we have to change leader.
"We don’t want to be here but sticking heads in the sand will make matters worse.
“Last chance saloon to change course with a new leader, be tough on immigration and save our great country from the socialists.”