The chief executive of the Post Office has said previous leaders may not have been “held to account” for being aware of problems with the Horizon IT system. Nick Read has been giving evidence at the long-running inquiry into faults with the system which sparked the wrongful prosecutions of hundreds of postmasters. Mr Read said: “I think one of the themes that has emerged amongst colleagues still working within the organisation is that many of the leaders historically who have appeared before this inquiry appear not to have been held to account, if in indeed they were aware of and understood other issues associated with Horizon in the past.” Former chief executive Paula Vennells is one of the senior members to have given evidence at the inquiry, during which she apologised to postmasters but denied there was a conspiracy to cover up the Horizon scandal. The scandal saw more than 900 subpostmasters prosecuted for stealing, based on incorrect information from an IT system known as Horizon. A long-running inquiry into the issue has been gathering evidence of the failings of the system at the Post Office, after the convictions of hundreds of postmasters were quashed earlier this year. The Post Office...