Welcome to the Post Office Horizon IT Inquiry website
This is an independent public statutory Inquiry established to gather a clear account of the implementation and failings of the Horizon IT system at the Post Office over its lifetime.
Call for Evidence
Ahead of Phases 3 and 4 of the Inquiry, our Chair, Sir Wyn Williams, is calling for witnesses involved in training, assisting, auditing or investigating subpostmasters to come forward. Find more details here.
Public Hearings Timeline
Indicative timeline for phases of the Inquiry.
Wellbeing and Support
Read about how you can receive support from the Inquiry if you are participating.
Latest news from the Inquiry
Responses from core participants published
Sir Wyn Williams' statement ahead of hearings on 6 and 13 July
Read submissions the Inquiry has received