Question to the HM Treasury:

To ask His Majesty's Government what assessment they have made of the quality of customer services provided by His Majesty's Revenue and Customers to taxpayers; and whether they will undertake a review or ask an independent third party to do so.

The quality of HMRC's customer service is regularly assessed by various bodies, including the Treasury Select Committee, National Audit Office, independent Adjudicator's Office, and Public Accounts Committee. HMRC also has internal customer surveys and key performance metrics to monitor its customer service objectives as outlined in the HMRC Charter.

HMRC Performance is published on a monthly and quarterly basis on GOV.UK:

https://www.gov.uk/government/collections/hmrc-monthly-performance-reports

https://www.gov.uk/government/collections/hmrc-quarterly-performance-updates