British Post Office scandal
https://www.bbc.co.uk/news/business-67905194Measures are being considered by the government to clear the names of hundreds of sub-postmasters convicted in the Post Office Horizon scandal.
More than 700 branch managers were convicted of false accounting, theft and fraud based on faulty software.
Fewer than 100 people have had their convictions quashed.
The prime minister said the government was reviewing options - including stripping the Post Office of its role in the appeal process.
The Post Office had the power to decide on bringing the original prosecutions and its appointed lawyers presented the evidence in court. But one option now would be for the Crown Prosecution Service and its own lawyers to step in as appeals continue to be heard.
Many victims of the scandal - which began in 1999 - are still fighting to have their convictions overturned or to secure full compensation after being forced to pay out thousands of pounds of their own money for shortfalls that were caused by Horizon accounting software.
Why were hundreds of sub-postmasters prosecuted?
Lee Castleton, a former postmaster who said his life has been ruined by the Post Office, told the BBC: "I'm really, really angry."
Rishi Sunak told the BBC's Sunday with Laura Kuenssberg that the scandal was "an appalling miscarriage of justice".
The Post Office - which is wholly-owned by the government - acted as the prosecutor when it brought the cases against its sub-postmasters and retains a role when those individuals appeal.
In some cases it has opposed attempts by sub-postmasters to clear their names.
Asked by Laura Kuenssberg if the Justice Secretary Alex Chalk was looking at whether all those convicted could be exonerated or the Post Office could be stripped of its role, Mr Sunak said: "Obviously, there's legal complexity in all of those things but he is looking at exactly those areas that you've described.
"It is right that we find every which way we can do to try to make this right for the people who were so wrongfully treated at the time."
Last month, a board overseeing compensation called for all Post Office staff wrongly accused of theft and false accounting to have their convictions overturned.
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