Post Office scandal: how might justice be delivered to those affected?

The Horizon compensation advisory board has renewed its call for all Post Office-driven convictions in the relevant period to be collectively overturned. Photograph: Andy Rain/EPA

The ITV drama Mr Bates vs the Post Office has brought the Post Office scandal back under the spotlight and also drawn attention to how justice can be delivered to those affected. Here the Guardian outlines some of the remedies suggested by campaigners and experts:

1) Quash all convictions relating to the Horizon IT system