A court has been told Scottish sub-postmasters who were given a criminal record as a result of the Post Office scandal have been placed in an "intolerable" position by politicians promising to pardon victims.

Around 100 Scots were criminalised due to the faulty computer system but only four have so far been successful in overturning their convictions.In England and Wales, the Post Office acted as a private prosecutor in all cases but the legal system in Scotland is different. Scotland's public prosecution service, the Crown Office, oversaw cases.