A POLICEMAN unwittingly revealed the security briefing notes about the birth of the Royal baby to the world's press.

Law enforcement were ordered to be vigilant with the crowds gathering outside the hospital where the Duchess of Cambridge was giving birth.

But one officer took his security detail so seriously he accidentally put his confidential briefing note on view for the world to see.

To be fair, it's not as though he held it up to the camera for the world to see.

But when photographers are using long lens cameras, it's best to ensure that your confidential briefing instructions are hidden from prying eyes.

The memo headed "briefing note Lindo Wings posts" could clearly be read and was snapped by paps hoping to get in on the action.

The details of the note have been blurred out in these photos (sorry folks), as it contains details of the Duchess's and her new baby's security operation.

A Metropolitan Police spokesman denied that the officer's actions put the security of the young monarchs' at risk.

"This does not represent a breach of security. The material has no protective security marking," the spokesman told The Daily Mail.

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