This year's dental practice written complaints data collection (KO41b) will open on Wednesday 18 June 2025.
The collection covers complaints made by or on behalf of patients between 1 April 2024 and 31 March 2025.
This year's collection period closes at 11:59pm on Wednesday 13 August 2025.
You can submit your KO41b data online.
About the KO41b
The NHS has a statutory responsibility to collect service wide information on patient complaints so trends can be identified, and we can demonstrate that the service is being responsive to patient feedback. It is a statutory and contractual requirement for primary care providers to declare brief details of complaints associated with their NHS care by submitting a KO41b return.
Support
Guidance notes for completing the KO41b collection are available on NHS England's website.
You can email DentalKO41b@nhsbsa.nhs.uk if you need any help with the KO41b complaints data return.