The statement said: "A number of NHS organisations have reported to NHS Digital that they have been affected by a ransomware attack". In parts of Northumberland, it's understood Global Positioning System can't issue prescriptions - or book patient appointments.
"The National Cyber Security Centre is working closely with NHS digital to ensure that they support the organizations concerned and that they protect patient safety", she continued.
Aatish Pattni from cyber security firm Check Point, said the version of Wanna Decryptor used in the attack was a new piece of malware.
An NHS spokeswoman has confirmed that no patient data was believed to have been taken in the cyber attack that left hospitals telling people to stay away from A&E.
NHS Digital also say the NHS has not specifically been targeted and the malware is affecting organisations from across a range of sectors.
The NHS says at least 16 of its organizations have been hit by the ransomware.
Spain, meanwhile, said several Spanish companies had been targeted in ransomware cyberattack that affected the Windows operating system of employees' computers.
Britain's National Health Service is a treasured institution and is free for anyone to access, but has ben hit by substantial budget cuts and clearly runs inadequate security systems. The developer of Wanna Decryptor appears to have added the suspected NSA hacking tools to the ransomware's code, said Matthew Hickey, the director of security provider Hacker House, in an email.
It is understood that several health trusts turned their computer systems off as a precautionary measure, rather than being shut down by the attack.
In most ransomware attacks, the malicious program will encrypt the files on a machine or create an encrypted backup of files and delete the originals in order to prevent any sort of system restore. As the disruptions rippled through hospitals, doctors' offices and ambulance companies across Britain on Friday, the health service declared the attack as a "major incident", a warning that local health services could be overwhelmed by patients. "Our focus is on supporting organisations to manage the incident swiftly and decisively, but we will continue to communicate with NHS colleagues and will share more information as it becomes available".
The attacks span the length of England.
Pictures posted on social media showed screens of NHS computers with images demanding payment of 300 United States dollars worth of the online currency Bitcoin, threatening to delete files within seven days.
Several British hospitals say they are having major computer problems as the result of an apparent cyberattack.