KO41a Hospital and Community Health Services Complaints collection

Frequency: Annual 

All NHS organisations and those delivering NHS services are required to submit an annual KO41a return. These data were previously collected quarterly but from the 2022-23 reporting period will be collected annually.

The information obtained from the Ko41a collection monitors written complaints received by the NHS regarding Hospital and Community Health Services and final published data are available through the Data on Written Complaints publication. 

The data required for this collection are:

• organisation details and organisation site details
• summary of overall numbers of complaints
• age of patient
• status of complainant
• service area
• subject area of complaint
• profession