The Royal Free, Whittington and UCLH have not been affected by a cyber attack against the NHS.

Trusts across the country are reporting IT problems, while NHS England has acknowledged the issue and say they are looking into it.

But spokeswomen from the Royal Free in Hampstead and the Whittington in Archway told the Ham&High they are not affected.

A spokeswoman for University College London Hospitals said staff were “looking into” the issue but that, “for the moment”, they are not affected either.

The Royal Free’s spokeswoman, meanwhile, said the hospital was going to advise staff on how to keep their systems secure.

NHS Digital said 16 institutions had reported problems with their systems so far after a “ransomware attack”.

“The investigation is at an early stage but we believe the malware variant is Wanna Decryptor,” NHS Digital wrote in a statement.

“This attack was not specifically targeted at the NHS and is affecting organisations from across a range of sectors.

“At this stage we do not have any evidence that patient data has been accessed.”

The NHS is working with the National Cyber Security Centre, Department of Health and NHS England to ensure patient safety is protected.