One Nation: 'We Are The Losers'

Hanson claims her NSW senator "sold out".

One Nation could be on the verge of casting loose yet another senator, with Pauline Hanson letting loose on NSW representative Brian Burston after he broke ranks on the government's tax cuts.

The three One Nation senators -- Hanson, Burston and WA's Peter Georgiou -- had initially supported the government's plan for big cuts to company tax, but Hanson sensationally announced last week she would renege on a pledge to vote for the changes.

However, Burston revealed on Thursday he would personally support the government after all, revealing further cracks in the triumvirate following the NSW senator being dumped as party whip and previously scrubbing much of his social media presence of any mention of One Nation. Burston told The Australian he had been blindsided by Hanson's announcement that the party would not support the tax cuts.

"I keep finding out One Nation policies when I read them in The Australian newspaper," he said.

On Thursday, Hanson and Georgiou held a press conference at Parliament House, where the party leader claimed Burston had "sold out" the party's position in a deal with the government. Hanson said she called Burston last week to inform him she would not back the tax cuts, and he had agreed with her decision.

She defended her decision not to support the cuts, claiming the  "erosion of Australian companies by multinationals who are coming in here, abusing our system".

She said  multinational companies were "using it for what they can get out of it and we are the losers, the Australian people are the losers".

"[Burston] feels that he did a deal with [finance minister Mathias] Cormann. He's sold himself out.... to me, it's more important we have to protect our Australian companies and industries here."

Georgiou jumped in to refute a question over whether Burston had "sold out One Nation" -- despite his leader, standing beside him, having claimed just that -- but Hanson went on to issue what has been seen as a threat to Burston's future preselection as a One Nation candidate at the next election.

"Just because you are automatically a senator in this place doesn't mean to say you have automatic top of the ticket," she said.

Hanson also maintained that One Nation members were required to vote as a bloc, before walking away from cameras.

However, Georgiou stayed in front of the cameras, seemingly oblivious his leader had walked off. He answered another question on his own.

"Does it show you're united when your boss just walked away?" came a second question from a journalist.

The WA senator looked around, confused, then saw the empty spot where Hanson had been standing previously.

"Actually I didn't realise she walked away. So I think I'll be walking away too now," he grinned, leaving the cameras to flash in his wake.

Earlier this month, ten daily reported Burston had started quietly deleting One Nation references from his Facebook and Youtube pages, as well as starting an Instagram profile without any party reference.

It sparked speculation as to whether Burston would be the latest One Nation senator to leave the party, following Rod Culleton and Fraser Anning both resigning in this term of parliament.