I have followed this scandal quite closely over the years, and these two quotations sum it up. Pretty sad:
"The report alleges that even before the program was rolled out in 1999, some Fujitsu employees knew that Horizon could produce false data."
"As the years went by the complaints grew louder and more persistent [...] Still the Post Office trenchantly resisted the contention that on occasions Horizon produced false data."
replies(2):