Appalling
This sordid affair is appalling. Anyone with any experience of software suspected that that was where the problem lay from the outset.
Arrogance, coverups, the untouchability and abuse of the 'special powers' of the Post Office, it all needs looking at.
Unfortunately this kind of activity will continue to happen until human beings are rendered genetically incapable of lying and deceipt.
Computer Weekly has a great summary of 'the story so far':
https://www.computerweekly.com/feature/Post-Office-Horizon-scandal-explained-everything-you-need-to-know
What we must not have is a quick blanket pardon and then a 'the matter is closed' type sweep-it-under-the-carpet scenario.