Princess Eugenie has landed herself in very hot water, after she exposed her daily routine to potential threats and terrorists during a candid magazine interview.

In the September issue of Harper's Bazaar, the 26-year-old royal went into an hourly breakdown about what she does with her life on a daily basis.

From where she exercises in the morning, to where she works, shops and even eats - the world now knows intimate details of how the Queen's granddaughter, and eighth in line to the throne, spends her day.

Colonel Richard Kemp, a former head of the international terrorism team at the Joint Intelligence Committee in the UK told The Mirror her interview was a "serious error".

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"Assuming it is an accurate depiction of what she does, it's quite a serious error and she should have been advised not to publish or disclose this information," he said.

"I think she should now revise what she does each day and do something completely different.

"As a granddaughter of the Queen she is a major terrorist target.

"If a terrorist wanted to kidnap, attack or even kill her, this sort of information would be an invaluable guide because she is giving away her location and the exact times she is there.

A security expert said Princess Eugenie may have put herself at risk of a terrorist attack or kidnapping. photo / Getty
A security expert said Princess Eugenie may have put herself at risk of a terrorist attack or kidnapping. photo / Getty

"She should change her routine immediately."

In the interview with Harper's Bazaar, Eugenie provided an hourly breakdown of her day, in a Princess diary style interview.

The young royal explained how she exercised between 7 - 8am each day, where she works and when she arrives, the name of her favourite deli where she grabs lunch from, and where she and her friends like to go for dinner.

Former Met Police royal protection chief Dai Davies, and one of the world's foremost experts in Security and Investigation, said it was "unwise" for Eugenie to deliver intimate information to the world.

The recent interview in Harper's Bazaar included an hourly breakdown of the Princess' day. Photo / Harper's Bazaar
The recent interview in Harper's Bazaar included an hourly breakdown of the Princess' day. Photo / Harper's Bazaar

"Given that for most of her life the Metropolitan Police and the public have spent an enormous amount of money protecting her, it is very unwise."

While media and journalists are usually given access to key diary moments of royal family members so they can cover special events, they are banned from revealing details in advance because of security concerns.

"It's a really stupid thing to have said," Professor Anthony Glees, director of Buckingham University's Centre for Security and Intelligence Studies said of Eugenie's interview.
"It's not rocket science; the first rule of good security is common sense.

"I think she puts herself at real risk - and it's not just risk from jihadists, it's risk from nutters and stalkers.

"Nobody in her position should tell the public where they are going to be at a particular time of the day. How stupid can you be?"