John is:

• Consultant Nurse, Critical Care & Critical Care Outreach, University College London Hospitals,

•  Honorary Clinical Lecturer, University College London

• National Clinical Advisor, Acute Deterioration, NHS England

​John set-up one of the first Critical Care Outreach services in the UK in 2001, was Programme Lead for Critical Care Outreach at the Department of Health Modernisation Agency 2002-2005, and first Chair of the UK National Outreach Forum. He was co-investigator on two completed NIHR studies (‘Have interventions aimed at recognising and rescuing deteriorating patients made an impact on incidence and outcomes?’ and ‘Psychological Outcomes following a nurse-led Preventative Psychological Intervention for critically ill patients’) and is currently co-investigator on the NIHR study ‘Digital alerting to improve sepsis detection and patient outcome’. John was UK clinical lead of the European Union €5.3m Horizon 2020 'Nightingale’ programme ‘Connecting Patients and Carers using wearable sensor technology’ developing world leading wearable patient monitoring systems'. He now leads on the roll-out of these systems at UCLH and in the community.

He is currently National Clinical Advisor for acute deterioration at NHS England, and Co-Chairs the NHSE Patient Worry & Concern Collaborative (under the national Acute Deterioration Board), developing methods to capture patient and family worry and concern to improve recognition of deterioration. He also sits on the national Managing Deterioration Safety Improvement Programme Advisory Group, a US Society of Critical Care Medicine Taskforce, and the Royal College of Physicians National Early Warning Score Independent Advisory Group (having been co-author of the NEWS and NEWS2 guidelines).

​John was named as one of the “100 Outstanding Nurses” by the We Nurses group in 2019 .