I've followed this story for long time, from back when Private Eye were just about the first to expose the shortcomings of the Horizon computer system. I remember cutting out the articles and sliding them under the glass to the postmaster of my village post office. Thankfully, he was not affected.
What has always puzzled me (among many things) is how somebody could be convicted of stealing, say £40,000, and end up in prison without the money being shown to be in any account or anywhere that the accused had access to. If I had been accused of fraud, I would have said 'okay, show where this money has gone and that I had access to, or control of it'. I'm sure they would have done, but it seems to no avail - how can that be?
The whole thing beggars belief, and I reckon it has a long way still to run.