Hundreds of sub-postmasters are expected to join a group legal action against the United Kingdom’s Post Office after many of them were accused or convicted of theft, fraud, and false accounting, because the organisation’s IT system was faulty.

Some were sacked, lost their businesses and homes, were forced to repay shortfalls that did not exist, ended up bankrupt, or were sent to prison after missing cash was recorded at some branches, says the lawyer representing them.

Neil Hodge is a freelance business journalist and photographer based in Nottingham, United Kingdom. He writes on insurance and risk management, corporate governance, internal audit, compliance, and legal...