Any subpostmaster with concerns over their Horizon accounting system must contact their MP, and tell that MP to get in touch with fellow MP James Arbuthnot. There was a meeting in Westminster in February that was well attended by both MPs and subpostmasters. James Arbuthnot has since met the boss of Royal Mail Group.

There is to be a debate on Horizon and the number of subpostmasters who have been bankrupted and criminalised by a system that claims to have no glitches.

So not only are the police involved, not only is Access Legal (Shoosmiths) pursuing collective action on behalf of the 100 or so retailers, but now the politicians are to get their hands dirty.