CECCG15500 | England & Wales: Complaints received directly by the IOPC
From HM Revenue & Customs · Complaints from External Customers about the Conduct of HMRC staff Guidance
The IOPC publicises its address as an access point for written and e-mailed complaints. It also operates and publicises a hotline for telephone complaints.
If a complaint is made directly to the IOPC, they will forward it to Internal Investigations once agreement from the complainant has been received.
The IOPC cannot formally take on a complaint for investigation without it first being recorded and referred by HMRC. Customers seeking advice via the telephone hotline will be re-directed to HMRC.