Most of the country has taken a sudden interest in the Post Office scandal this month even though there is not much about it that is new. The scandal reaches as far back as the mid-90s. Then, after years of fighting, in 2019 a High Court ruling identified glitches in the Horizon IT system, while a public inquiry began in 2020 and many of the sub-postmasters had their criminal convictions overturned in 2021.