Medical students have been asked to act as "floorwalkers", hand delivering blood tests, on the shifts
A spokesperson for NHS London said staff were "working around the clock" to minimise "the significant disruption to patient care". It said: "In this critical situation, we urgently need volunteers to step forward and support our pathology services. In a separate leaked email to staff, the chief executive at Guy's and Thomas' Trust, Prof Ian Abbs, said difficult conversations were being had with patients who have had appointments cancelled.
In another letter they were told staff had the full support of management "to make decisions based on your best professional judgment".A spokesperson for NHS London said they were sorry to all those impacted by the cyber-attack.