CNN —A cyberattack on a contractor to England’s National Health Service has forced several major hospitals in London to cancel operations, blood tests and appointments and send patients elsewhere. King’s College Hospital, Guy’s and St Thomas’ have all been affected, as have numerous primary care providers in the UK capital, a spokesperson for the National Health Service (NHS) said Tuesday. The hospitals and providers affected are all partnered with Synnovis, a company that provides lab services to the NHS. Mark Dollar, the CEO of Synnovis, said the company was “incredibly sorry for the inconvenience and upset this is causing to patients, service users and anyone else affected. We are doing our best to minimize the impact and will stay in touch with local NHS services to keep people up to date with developments.”

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Persons: Thomas ’, Oliver Dowson, Thomas ’ –, “, ”, Vanessa Welham, Ciaran Martin, ” Martin, Mark Dollar Organizations: CNN, National Health Service, King’s College Hospital, Synnovis, NHS, Royal, Guy’s, Gracefield, Cyber Security, Cyber Operations Locations: London, Guy’s, Royal Brompton, Streatham