By Ryan Merrifield Kate Middleton’s former postmaster has made one more demand for justice after the landmark announcement to exonerate those wrongly convicted. Hundreds of Post Office branch managers caught up in the Horizon IT scandal could see their names cleared by the end of the year. Blanket legislation to exonerate subpostmasters convicted in England and Wales will be introduced within weeks. It opens the door to six-figure compensation for those wronged. Hasmukh Shingadia, 63, demanded “every conviction is overturned” as a campaign grows for justice for the approximate 700 sub postmast…