"Between 2000 and 2014, the Post Office prosecuted 736 sub-postmasters and sub-postmistresses - an average of one a week - based on information from a recently installed computer system called Horizon."

And

"The Post Office has set up a historic shortfall scheme designed to repay those who lost out, but this excludes those who were part of the High Court settlement.

More than 2,400 claims have been made to the scheme. Ministers said this was more than the Post Office expected and held the potential for the government having to step in to cover some of the cost."

Post Office Scandal - BBC 23rd April 2021