HM Revenue and Customs

1,109Total number of complaints received in 2025 to 2026

Initial checks and primary investigation

Complaints resolved by mediation: 0
Decided following primary investigation: 279
Resolved with agreement of complainant: 6

Detailed investigation

Accepted for detailed investigation: 9
Fully upheld: 1
Partly upheld: 4
Not upheld: 2
Resolved with agreement of complainant: 0
Discontinued: 0

Number of complaints upheld

Upheld: 9%
Upheld or partly upheld: 23%
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