The data we publish includes information on complaints we received about the NHS in England, UK government departments and other public services. This data covers the period from 1 April to 31 March each year and shows the decisions we made at each stage in the process.
Information included in the data tables
An explanation of the information included in the data tables is provided below.
- Complaints received: This is the number of complaints we received between 1 April 2024 and 31 March 2025. The number of decisions we made may be different from the number of complaints we received. This is because we may have received some complaints in the previous year and made a decision the following year. For example, a complaint might be received in 2023 to 2024 then decided following a detailed investigation in 2024 to 2025.
- Complaints resolved by mediation: Complaints where we have helped complainants and organisations agree a resolution through our mediation service.
- Decided following primary investigation: Complaints where we made a decision following a primary investigation. This is when we look to see if the complaint can be resolved quickly without the need for further investigation. These figures do not include cases closed by mediation.
- Resolved with agreement of the complainant at initial checks or primary investigation: This includes complaints we have resolved with the agreement of the complainant, without mediation or further investigation.
Help us improve
If there is any way we could make our data more user-friendly or accessible, please let us know. Email your ideas, comments and feedback to publicaffairs@ombudsman.org.uk.