INCREDIBLE, extraordinary and utterly unbelievable.

That is how 60 Minutes reporter Ross Coulthart describes what he sees as one of the biggest political scandals in UK history.

But it’s not just the allegations that for decades MPs, Lords, and secret service officers were part of a highly organised paedophile ring that left the seasoned reporter without words. It was the views of paedophile advocate Tom O’Carroll.

As part of their investigation into the Westminster paedophile network, the 60 Minutes team spoke to the controversial figure who believes having sex with children should be legal.

“I don’t think I have ever seen an unrepentant paedophile speaking candidly about their beliefs and their lusts before,” Mr Coulthart told news.com.au ahead of the program. “It really is very confronting because you realise in their own minds they genuinely believe that what they are doing is not wrong.

“One of the arguments that he makes is that the trauma that children suffer when they have sex with adults is not caused by having sex with adults. He claims the trauma is caused by the fuss that is made by police, parents and by government agencies and he says if paedophiles were just left alone to have sex with kids everything would be fine because children can consent to sexual relations.

“It’s a huge dilemma for us as parents and as citizens. How do we deal with people like this? When you meet one face-to-face defending his beliefs arguing that’s perfectly reasonable for children to be allowed to consent to have sex with adults, you realise that children have to be protected from people like that.”

The 60 Minutes team travelled to London to interview victims, witnesses, and British police officers, who said they were told to drop their inquiries against high-profile figures such as former Labour MP Lord Greville Janner.

One of the glaring allegations to surface in recent weeks is that the UK Crown Prosecution Service admitted that it had enough evidence to charge Lord Janner with sex crimes against boys three times over the last 25 years. He has always denied the allegations.

However it is unlikely, Lord Janner, 86, who suffers from dementia, will ever face court.

Detective Inspector Kelvyn Ashby pursued allegations that MP Greville Janner was sexually abusing a 12-year-old boy. https://t.co/1wqWMXSezB — 60 Minutes Australia (@60Mins) July 19, 2015

While the allegations against at least 10 current and former MPs and subsequent cover-ups are so explosive that it eventually led to a British parliamentary inquiry, Mr Coulthart says it should be front page news almost every day, yet he says it isn’t.

“I have been gobsmacked that this has not been a front page daily news scandal,” Mr Coutlhart said. “One of the reasons why we decided to do this story was because we couldn’t believe that so much of the English media wasn’t. I think to a large degree a large percentage of the British media has been complicit in covering it up.

“There’s been stories we’ve been told about of stories being pulled from the media. It is the very worst tradition of British establishment political corruption. The institutions of state have been corrupted in order to protect the rich and powerful.”

To this day, Tom O’Carroll maintains the warped belief that sex with a minor would not traumatise the child. https://t.co/PDbrsOHzRe — 60 Minutes Australia (@60Mins) July 19, 2015

The 60 Minutes team also speak to the driver to the Australian High Commissioner, who they say could hold the key to blowing this case wide open.

“The people who are implicated are not just former members of parliament and public servants, they are people that have been named to us that are still in government who are still in public service and in very powerful positions,” Mr Coulthart explained. “And the question has to be asked, are they being protected? And I suspect there are.

“It’s very confronting.”