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.

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Call for Evidence

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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.