In Part 1, we told the story of how the Horizon computer system led to hundreds of sub-postmasters being accused of theft, fraud, and false accounting for losses that often never existed.

In Part 2, Dee and Isla examine what happened after the cracks in Horizon became impossible to ignore.

We look at the stories of some of the people whose lives were devastated by the scandal, including Janet Skinner, Seema Misra, Sathyan Shiju, and Jo Hamilton. We explore the role of Post Office leadership, the growing scrutiny of former CEO Paula Vennells, and the ongoing questions surrounding who knew Horizon was flawed and why prosecutions continued regardless.

We also examine the public inquiry, the compensation schemes, the overturning of convictions, and the continuing investigations into one of the largest miscarriages of justice in British legal history.

Because while many convictions have now been quashed, for many victims the fight for justice is far from over.

Plus, Dee tests Isla with another edition of our multiple-choice quiz—this time focusing on some of history's most spectacular computer failures.

Trigger Warning: This episode contains discussion of suicide, imprisonment, miscarriage of justice, financial ruin, mental health struggles, and wrongful criminal convictions.

Sources

• Nick Wallis, The Great Post Office Scandal (2021)

• British Scandals – Post Office Horizon Scandal series

• Post Office Horizon IT Inquiry – Final Report, Volume 1 (2025)

• Post Office Horizon IT Inquiry – Reports & Statements Hub

• Post Office Horizon IT Inquiry – End of Year Newsletter Review (2025)

• Government Response to the Post Office Horizon IT Inquiry Report (Volume 1)

• Bates v Post Office Ltd (High Court Judgments, 2019)

• Hamilton & Others v Post Office Ltd (Court of Appeal Judgment, 2021)

• Post Office (Horizon System) Offences Act 2024

• Post Office (Horizon System) Offences (Scotland) Act 2024

• Horizon Shortfall Scheme Information and Data

• Post Office Horizon Financial Redress Data (December 2025)

• Post Office Horizon and Capture Redress Legal Costs Data (December 2025)

• Quashed Convictions Management Information (October 2024 & October 2025)

• Criminal Cases Review Commission (CCRC) – Horizon Cases

• Metropolitan Police – Operation Olympos

• Government Consultation on Oversight and Regulation of Private Prosecutors

• The Guardian – Post Office operator wrongly jailed while pregnant rejects executive's apology (2024)

• The Guardian – Marina Hyde: Innocent subpostmasters went to jail, but now it is clear the Post Office boss class belong there instead (2025)

• ITV News – Ex-subpostmistress jailed after Post Office scandal rejects compensation offer (2025)

• The Independent – Attempted suicide, exile abroad and prison: The stories behind the Post Office scandal

• Computer Weekly – Eradicating Fujitsu and Horizon from the Post Office, step by step