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Submit your written complaints data (KO41b) - 2023

This year's dental practice written complaints data collection (KO41b) will open on Wednesday 12 July 2023. 

The collection covers complaints made by or on behalf of patients between 1 April 2022 and 31 March 2023. 

This year's collection period closes at 11:59pm on Wednesday 23 August 2023. 

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.


Guidance notes for completing the KO41b collection are available on NHS Digital's website.

Contact us if you need any help with the KO41b complaints data return.