King's medical records not accessed during 'data breach' of Princess of Wales's notes at the London Clinic

The King's medical records were not accessed during an alleged data breach at the London Clinic, it is understood.

As many as three staff members could have been involved in allegedly accessing the Princess of Wales's private records, according to The Mirror, after Kate was discharged from the exclusive hospital in central London in January.

Charles, who is undergoing treatment for a form of cancer, was also treated at the London Clinic for an enlarged prostate during the same month.

But it is understood the security of the monarch's personal data was not breached, according to a source who spoke to the PA news agency.

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Today, the clinic vowed that "all appropriate investigatory, regulatory and disciplinary steps will be taken" over any alleged breach.

Al Russell, chief executive of the London Clinic, said: "There is no place at our hospital for those who intentionally breach the trust of any of our patients or colleagues."

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The Information Commissioner's Office (ICO) - the UK's privacy watchdog - launched a probe when the claims emerged yesterday and is in the process of assessing the information.

Kate was discharged from the private hospital on 29 January following abdominal surgery for an unknown condition.

She had not been seen in public since her last royal event on Christmas Day, until she was pictured sitting in a car driven by her mother, Carole Middleton, near Windsor.

The future Queen was then spotted at the Windsor Farm Shop with husband William on Saturday.

Charles was discharged on the same day as Kate and it later emerged he was diagnosed with cancer. Buckingham Palace has not revealed what type of cancer he is being treated for.

However, the absence of the Princess of Wales from public life and the lack of detail about her condition has fueled wild conspiracy theories on social media.

This speculation prompted the release of Kate's infamous Mother's Day picture that was subsequently "killed" by a string of major picture agencies when it was revealed to have been doctored.