There's a great timeline of events here:
https://uk.news.yahoo.com/timeline-post-office-scandal-when-started-170059825.html
Adam Crozier was head of the Royal Mail group from 2003 - the year when Alan Bates had his role terminated and lost £60,000 savings he'd invested in the business.
Alan Bates first wrote to Computer Weekly in 2004. It wasn't until 2009 that an article there described what had happened to seven postmasters.
Ed Davey refused to meet Alan Bates in May 2010. He then met him in October later that year. The same month that Seema Mistra was snetenced to 16 months in prison.
Paula Vennells became chief exec of the Post Office in 2012 - she'd been their group network director prior. This was the same year that Second Sight submitted an interim report.
December 2013 is when Martin Griffiths commits suicide.
In 2015 Vennells told a parliamentary committee in there had been no evidence of any miscarriage of justice. Vennells earned £4.5 million during her time as boss.
A key figure in all this is multimillionaire Tim Parker who joined the Post Office 2015 as chairman - he ended up stepping down in 2022 due to this scandal.
Another one is Gareth Jenkins, chief IT architect for Fujitsu. He even had the gall to the public inquiry for immunity against incriminating himself...
Since Ed Davey there have been many ministers who had the post office as part of their brief but trying to find them all ie a bit of a pain as they keep changing the name of the role and often it's tied up with other roles:
Jo Swinson
Baroness Neville-Rolfe
Margot James
Kelly Tolhurst
Kevin Hollinrake
Paul Scully
Jane Hunt
They are the ones I found before giving up.
The whole things is a massive cover up and I hope every single person who lied about the efficacy of those machines gets named and shamed and taken to court but cannot see it happening.