Ambulance Systems Indicators (AmbSYS)
Monthly response times, transport to Emergency Department, call and incident counts
The Ambulance Systems Indicators (AmbSYS) are provided via the Strategic Data Collection Service (SDCS) by the eleven NHS ambulance services in England.
For the eleven Ambulance Services in England the indicators include: Monthly incident count and response times for Categories C1 to C4; incidents resolved on scene or on the telephone; clinical validation and assessment; resources allocated to incidents; handover times at ED or non-ED; calls to 999 and average answer times
NHS England publishes AmbSYS for each month on the second Thursday of the following month, alongside the Ambulance Clinical Outcomes.
Frequency: Monthly
Launch and submission dates
This collection is a monthly collection. It will open on the morning of the 1st working day of each month.
See the timetable section of the NHS England Ambulance Quality Indicators for information about submission, deadlines, revision details and publication dates, Registered data submitters of the data collection will receive monthly emails from the Strategic Data Collection Service (SDCS) confirming when the reporting window is opening and closing.
Last edited: 25 March 2026 11:43 am