The Post Office brought prosecutions against dozens of its employees after accusing them of theft and false accounting based on evidence from its IT system called Horizon.
Janet Skinner was one of those who went to jail for false accounting and last month she was one of 39 former operators who had their convictions overturned by the court of appeal.
Now she tells Anushka Asthana that she is joining hundreds of former workers calling for a government inquiry with teeth.
The Private Eye journalist Richard Brooks, who has followed the story for more than a decade, tells the Guardian that finally justice is being done.
Clips from BBC, Sky News
Photograph: Yui Mok/PA
Support The Guardian
The Guardian is editorially independent.
And we want to keep our journalism open and accessible to all.
But we increasingly need our readers to fund our work.
Support The Guardian