Major cyberattack sees NHS London hospitals declare critical incident with operations cancelled

A ransomware attack targeting Synnovis, a London-based supplier of blood tests and pathology services, has forced two London hospital trusts to cancel non-emergency operations and blood tests. The attack has affected GP services across South London and six hospitals. The National Cyber Security Centre and NHS England are investigating, and staff have warned that it could take weeks or months to resolve. Hospital staff have been told to request emergency blood samples only from those who require transfusions.