Queen Elizabeth II has the best security in the world, but a newly-resurface footage interview of Princess Anne revealed why her mother is "always in danger."

Queen Elizabeth's security is the best in the entire world but is very low-key and unobtrusive. However, a past interview with Princess Anne revealed Her Majesty is "more at risk" than what people might think. Legendary chat show host Michael Parkinson interviewed the monarch's first daughter in 1985, and the latter talked about the infamous kidnapping attempt on Princess Royal in 1974.

Princess Anne said that members of the royal family face real danger, particularly Her Majesty. When Parkinson asked her if it's riskier nowadays being in her position than it was, Queen Elizabeth's daughter replied: "I doubt it."

The Princess continues saying that public figures have always been in danger in some degree, citing several attempts on Queen Victoria. But, Princess Anne suggested that Queen Elizabeth may have had more assassination attempts than Queen Victoria - adding that "it's worse."

Perhaps, the most notorious assassination attempt on Her Majesty happened during the '70s. During those times, the monarch and her husband Prince Philip made an extensive tour of Australia, which is connected with the bicentenary of Captain James Cook sailing up the country's east coast in 1770.

This, however, only came to light in 2009, with claims saying a secret plot to kill the couple during the royal tour. The late Detective Superintendent Cliff McHardy decided to break his silence in an interview with a local newspaper and shared what happened, describing it as "one of the great unsolved mysteries" of his long police career.

On April 29, 1979, as per McHardy, the monarch and her husband were traveling by train to the farming town of Orange. But when it reached near the Blue Mountains town of Lithgow, the train reportedly struck a large log wedged across the rails. He claimed it was an act of deliberate sabotage to derail the train, suggesting that it could've killed the royal couple.

The late McHardy added that the "catastrophe" was only avoided because the train driver was slowly traveling. But if ever it reached its normal speed, the train would've plunged off the tracks and into the embankment. Then, he revealed his investigation showed then the log was deliberately put on the tracks. Stay tuned to Business Times for the latest news and updates about Queen Elizabeth II!