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The Great Post Office Scandal


The extraordinary story behind the major ITV drama series

In April 2021, the Court of Appeal quashed the convictions of 39 former Subpostmasters and ruled their prosecutions were an affront to the public conscience. They were just a few of the hundreds who had been prosecuted by the Post Office using IT evidence from an unreliable computer system called Horizon. When the Post Office became aware that Horizon didn't work properly, it covered it up.

The Great Post Office Scandal is the story of how these innocent people had their lives ruined by a once-loved national institution and how, against overwhelming odds, they fought back to clear their names.

Gripping, heart-breaking and enlightening, The Great Post Office Scandal should be read by everyone who wants to understand how this massive miscarriage of justice was allowed to happen.

We're donating 5% of our income from sales of the paperback edition to helping Subpostmasters via the Horizon Scandal Fund - read more here

Read the first 3 chapters for free

About the author

Nick Wallis

Nick Wallis is an award-winning freelance journalist and broadcaster. He has worked with the BBC, Private Eye and ITN. His Radio 4 series on the Post Office scandal has been nominated for national awards. He has also acted a Series Consultant for the ITV drama, Mr Bates vs The Post Office

Prices & formats
  • Updated 1st edition published November 2022
  • 580 pages
  • Prices
    • Paperback: £13.99 ISBN 978-1-739099206
    • Hardback: £18.99 ISBN 978-1-916302389
Read the reviews

“An extraordinary journalistic exposé of a huge miscarriage of justice.”
Ian Hislop, Editor, Private Eye

“The definitive account of the scandal - from the journalist who pursued every twist and turn.”
Mishal Husain, Broadcaster

“Beautifully written. Full of heart rending detail, clarity and insight.”
Patrick Spence, Creative Director, ITV Studios

“Nick has come to understand the ultimately destructive management culture which pervaded the Post Office from the top down.” 
Tom Hedges, former Subpostmaster

“A tale brilliantly told by Nick Wallis, who has dedicated years of work to establishing what happened, why it happened and calling those responsible to account. I urge you to read it.”
Rev Richard Coles, Presenter

“Nick’s narrative has the power of a great thriller as he lays bare the lies and deceit that has ruined so many lives.”
Dame Joan Bakewell, Journalist

"we can expect to see copies of The Great Post Office Scandal within easy reach of every lawyer and reporter at the hearing."
Joshua Rozenberg, Legal Commentator

"the story of a long-running scandal told with empathy and compassion while deftly explaining the complex, technical issues."
Sam Tobin, The Law Society Gazette

"Nick Wallis has written what feels like the most important book I have ever read."
Paul Gilbert, LBC Wise Counsel

"the conversational style and the sense that a new revelation is just a few pages away will keep you from putting it down, and the many startling vignettes will make you exclaim in shock and horror."
Rónán Kennedy, Computers & Law Magazine

"Couldn't put it down. Truly astonishing."
 Amazon Reader

"One of the books of the century."
 Lord Arbuthnot

"If there is one new book that everyone involved in running any kind of complicated organisation and everyone in politics should read, it is The Great Post Office Scandal by Nick Wallis"
Stephen Bush, the i newspaper


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