Question to the Department for Business and Trade:

To ask His Majesty's Government how many sub-postmasters repaid money to cover shortfalls in the first 10 years of the Post Office's use of the Horizon computer system.

To date, 2745 former postmasters have applied to the Horizon Shortfall Scheme for those who suffered losses due to the Horizon IT System. There were 555 postmasters as members of the original Group Litigation Order against the Post Office. There were over 900 prosecutions during the relevant period. Therefore, around 4000 people could potentially have been affected by Horizon shortfalls, albeit over a longer time period than 10 years.