NSW Liberal MP Tanya Davies addresses anti-vax protest outside NSW Parliament

Liberal MP Tanya Davies runs a freedom rally

A Liberal backbencher has broken ranks and criticised the Prime Minister and Premier over COVID vaccine mandates at a protest in front of NSW Parliament.

Tanya Davies, who was once a state government minister, addressed hundreds of people at the rally which closed Macquarie Street for over an hour this morning.

The Western Sydney MP issued a direct warning to Scott Morrison.

"I would pay very close attention to the election results in South Australia," she said.

"You have an opportunity now Mr Morrison to lead this nation back to freedoms." 

She also urged the Prime Minister to start "acting and speaking based on your Liberal Party values".

During the Delta lockdown last year, Ms Davies spoke out against the vaccine mandate that at the time was being imposed on the workers in the construction industry by the state government.

Hundreds of people attended the protest outside NSW Parliament. (AAP: Dean Lewins)

Ms Davies told the crowd, she stopped her public criticism when Dominic Perrottet became Premier last October.

"I thought awesome now we are going to have a leader in this state who actually believes in the things I believe in," she said. 

"I wanted to give the new Premier, Dominic Perrottet, the opportunity to turn the Titanic around."

Mr Perrottet also leads the right faction of the NSW Liberals, to which Ms Davies belongs.

But now Ms Davies said despite COVID restrictions being eased "as far as I'm concerned those positive moves are not fast enough for our community".

The crowd chanted "sack them all" as Ms Davies finished her speech.

Afterwards, she insisted she was entitled to her opinion and isn't planning on resigning from the Liberal Party. 

She currently holds the position of Parliamentary Secretary for Planning and has been the member for Mulgoa since 2011.

Yesterday, Transport Minister David Elliott also raised concerns about the direction of the Liberal Party after the party's loss in South Australia.

"We've got to make sure people get what they pay for when they vote Liberal," he said.

"And that is that we are a centre-right party, we believe in small Government, we believe in entrepreneurialism, we believe in individualism, and we believe in getting the government out of people's lives when necessary." 

Dominic Perrottet is currently on leave, after the birth of his seventh child.