Prime Minister Boris Johnson has welcomed a decision which has seen 39 former sub-postmasters have their convictions for theft, fraud and false accounting quashed by the Court of Appeal. The court ruled that the victims had been wrongly convicted due to the Post Office's defective Horizon accounting system. Report by Patelr. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn