Source: Institute for Government analysis of NHS England, ‘Ambulance quality indicators time series’ ('Response times' table), January 2023, supported by CIPFA. Notes: 90th percentile indicates that 90% of response times were faster than this, and 10% were slower. Category 1 responses are for the most severe calls that include a life-threatening condition, such as cardiac or respiratory arrest. Data was not available before 2017. Get the data Embed