Who owns the Post Office and which minister is responsible? BEIS, Cabinet Office, UKGI and Treasury all involved. https://www.postofficetrial.com/2019/11/the-post-offices-journey-into-disaster.html
Lack of oversight led to millions of public money wasted and lives destroyed https://www.independent.co.uk/news/business/news/post-office-high-court-case-it-horizon-postmaster-prison-latest-a9249431.html