NHS London statement on Synnovis ransomware cyber attack – Thursday 6 June 2024

NHS organisations across London continue to work in partnership to manage patient care following the ransomware cyber-attack on Synnovis earlier this week.

Guy’s and St Thomas’ NHS Foundation Trust, King’s College Hospital NHS Foundation Trust and South London and Maudsley NHS Foundation Trust remain in a critical incident, while Oxleas NHS Foundation Trust, Lewisham and Greenwich NHS Trust, Bromley Healthcare, and primary care services in South East London continue to be impacted.

Chris Streather, Medical Director for NHS England London, said: “NHS staff are working around the clock to minimise disruption to patient care following the ransomware cyber-attack on Synnovis earlier this week.

“Pathology services at the impacted sites are available – albeit at a reduced capacity – with the most urgent cases being prioritised.

“Unfortunately, some non-urgent operations and procedures including transplants continue to be postponed, while nearly all non-urgent blood tests have been postponed in primary care services in South East London.

“We are sorry to all those who have been impacted and staff will work hard to re-arrange appointments and treatments as quickly as possible.

“Urgent and emergency services are available as usual so patients should access services in the normal way by dialling 999 in an emergency and otherwise use NHS 111 through the NHS App, online or on the phone.

“If you have not heard from your healthcare provider, please attend appointments as normal as services including outpatients and community services are mostly running as usual, including cervical screening.”


  • Transplants will be assessed on a case-by-case basis with patient safety being at the heart of our approach.
  • All urgent and emergency services such as A&E, urgent care centres, maternity departments remain open as usual
  • At present the full extent of the attack, as well as the impact upon data, is not known. Once further information is known we will report accordingly in line with Information Commissioner’s Office requirements.
  • NHS England has deployed a cyber incident response team, which is working round the clock to support Synnovis and provide emergency guidance.


This page was edited on Friday 7 June to correct an error and confirm that South London and Maudsley NHS Foundation Trust was in a critical incident at the time this statement was published.