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Post Office Horizon IT Inquiry

Ongoing

Post Office Horizon Inquiry

Chair Sir Wyn Williams Judge / Judiciary
Established 01 Jun 2021
Commissioned by Department for Business and Trade Originally established under Department for Business, Energy and Industrial Strategy (BEIS)

Public inquiry into the Post Office Horizon IT scandal, examining how more than 900 sub-postmasters were wrongly prosecuted based on faulty Fujitsu software between 1999 and 2015.

Live tracking hearings, witnesses and documents synced daily from the inquiry website Open live tracker Search evidence
5 years, 1 month Duration (ongoing)
£80m Total Cost
114 Witnesses
96 Hearing Days
303 Statements
Inquiry Website Terms of Reference
Government Response
Accepted 19
Accepted in Part 6
Not Accepted 1
Under Review 1
Total Recommendations 27
Data last updated: 20 May 2026 · Source
Data verified: 18 Jun 2026 (Claude)
How to read this

Government Response tracks what the government said it would do (accepted, rejected, etc.).

Full methodology

2 debates 26 questions since Jan 2022
Written Question Post Office Horizon IT Inquiry
Dr Al Pinkerton (Liberal Democrat)
11 Nov 2025
Written Question Fujitsu: Contracts
John Milne (Liberal Democrat)
13 Oct 2025
Written Question Fujitsu: Contracts
John Milne (Liberal Democrat)
13 Oct 2025
Hansard Debate Post Office Horizon Inquiry: Volume 1
17 Jul 2025
Written Question Procurement: Standards
Baroness Ritchie of Downpatrick (Labour)
14 Jul 2025
View all 34 mentions →
All Activity (34)
Title Volume Publication Date Tracked recs Links
First Interim Report: Compensation - 17 Jul 2023 8
Post Office Horizon IT Inquiry: Final Report 1 08 Jul 2025 19
19 Feb 2020
Inquiry Established

Initially non-statutory inquiry established.

Source
26 Feb 2020
Inquiry announced

The Prime Minister committed to an independent inquiry into the Horizon IT system, established on a non-statutory basis.

Source
01 Sep 2020
Chair Appointed

Sir Wyn Williams appointed as Chair.

01 Jun 2021
Converted to statutory inquiry

Inquiry converted to statutory public inquiry with power to compel witnesses.

14 Feb 2022
Human impact hearings open

Human impact hearings commenced.

15 May 2023
Phase 4 Hearings

Phase 4 examining Fujitsu's role began.

17 Jul 2023
Interim report on compensation

Sir Wyn Williams laid before Parliament his first interim report, on the compensation schemes.

Source
08 Jan 2024
Phase 6 Hearings

Phase 6 examining Post Office Ltd began.

13 May 2024
Phase 7 Hearings

Phase 7 examining Government, UKGI and Royal Mail Group.

17 Dec 2024
Hearings conclude

Closing statements ended the oral hearings, which ran across Phases 1 to 7 from February 2022.

Source
30 Jun 2025
Final Report Expected

Chair Sir Wyn Williams expected to publish final report.

Source
08 Jul 2025
Final report Volume 1 published

Volume 1 of the final report, on the human impact of the scandal and redress, was laid before Parliament (HC 1119); further volumes remain pending.

Source
Total Inquiry Cost (Cumulative) £80,000,000
to Mar 2026 Parliamentary written answer Q125532 (Apr 2026)
Cost Breakdown (to Mar 2026)
Inquiry Legal Costs £24,455,048 Panel remuneration & Counsel to the Inquiry
Core Participant Legal Costs £15,904,255 Legal funding for core participants
Staff £4,915,306
Accommodation £8,851,979
Technology £4,092,512
Other £16,507,456
Blair McDougall (DBT): £80m covering inquiry operating costs to 31 Mar 2025 plus 2025-26 wind-down. Post Office engagement costs (£134m) are separate. Per-year breakdown only available to FY24-25 (£74.7m cumulative).
Cost History
Period Total Inquiry Legal CP Legal Source
Mar 2026 (cum.) £80,000,000 £24,455,048 £15,904,255
Mar 2025 £26,017,032 £8,738,949 £5,202,243
Mar 2024 £26,770,510 £8,373,766 £6,150,587
Mar 2023 £18,491,383 £5,717,654 £3,905,857
Mar 2022 £3,087,287 £1,492,280 £645,569
Mar 2021 £360,345 £132,399 -
Clear

Recommendations (1)

POH-13
Not Accepted
Close HSS Dispute Resolution Procedure when HSSA opens
Recommendation
The current Dispute Resolution Procedure in HSS should be closed once all claimants currently within the Procedure have either (a) settled their claims or (b) transferred to HSSA. No claimant who is not in the Dispute Resolution Procedure when HSSA … Read more
Published evidence summary
- The recommendation called for the HSS Dispute Resolution Procedure to be closed once current claimants had settled or transferred to HSSA.
- The Department for Business and Trade rejected this recommendation on 9 October 2025, stating it conflicted with the principle of "full and fair" redress and that postmasters should retain the choice between dispute resolution and the appeals process (Government response to the Post Office Horizon IT Inquiry report (volume 1), DBT, 9 October 2025).
- The Business and Trade Select Committee noted the rejection, and the committee report HC 1598 did not challenge it directly but concluded the broader HSS scheme remained in need of reform (Business and Trade Committee, HC 1598, March 2026).
Department for Business and Trade (Primary)
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