British conspiracy theorist David Icke said he is "shocked and appalled" at the Australian Government's decision to revoke his visa ahead of a planned speaking tour of the country.

Key points: Mr Icke says he is the victim of a "smear campaign" and said he was banned "with no shred of evidence"

Mr Icke says he is the victim of a "smear campaign" and said he was banned "with no shred of evidence" He says he is not anti-Semitic and called on the Government to reverse the decision

He says he is not anti-Semitic and called on the Government to reverse the decision On Wednesday, Labor immigration spokesman Shayne Neumann said he supported the decision

A number of community groups, including the Anti-Defamation Commission and the Executive Council of Australian Jewry, successfully lobbied Immigration Minister David Coleman to ban Mr Icke.

Mr Icke is a Holocaust denier who says the September 11 terrorist attacks in New York City were an inside job, and that the world is secretly run by shape-shifting alien lizards.

In a statement, he expressed disappointment at Australia's "knee-jerk reaction" and insisted he was not anti-Semitic or a Holocaust denier.

"I have been a victim of a smear campaign from politicians who have been listening to special interest groups attempting to discredit my beliefs, my views and my character by spreading lies," Mr Icke said.

"With no shred of evidence, these ploys have worked.

"This is the creation of a blatantly Orwellian totalitarian state and says the Government believes they have the right to dictate what the public can and can not choose to hear."

On Wednesday, the initial decision was met with widespread approval, including from Labor's immigration spokesman Shayne Neumann.

Mr Icke hit out at the Australian Government's decision on his website. ( Supplied: Tyler Merbler, Flickr )

"Labor welcomes the fact that the Government did what we called on them to do and refused David Icke's visa application," he said.

"It's up to Immigration Minister David Coleman to explain who he lets into Australia and how his decisions meet community standards and expectations.

"We would have been concerned if Immigration Minister David Coleman granted a visa to anyone who intends to vilify a segment of the Australian community or sow dangerous seeds of disunity."

Chairman of the Anti-Defamation Commission Dvir Abramovich was also pleased with the decision.

Mr Icke has posited that the world is secretly controlled by lizard people. ( Supplied: Facebook )

"Allowing Icke into our country would have crossed red lines and would have sent the message that it is open season on the Jewish community and that vilifying and maligning Australian Jews is OK and normal," he said.

Mr Icke has demonstrated he does not intend to take the Australian Government's decision lying down.

His website carries a video called The Day Aussie Freedom Died, in which he says the Government's decision "should chill to the bone every Australian".

It also contains a link to a petition to overturn the "tyrannical last-minute ban".

Mr Icke ended his statement with a warning.

"Electing to deny my entry into the country only confirms to the general public that my contentions is truly correct; freedom is in the process of being demolished in Australia," he said.

"Once gone — it won't be coming back."