By Matt Roper Luke Huxhall will never forget the last time he saw his late dad Peter. The once proud former sub postmaster had angrily barged his way into the Post Office building where he had once lived with his now estranged family. Convinced his dad had stolen the missing cash which had turned their lives upside down, Luke, then aged 21, tried to protect his mum and younger siblings, blocking his way and pushing him back out onto the street. “It was an unpleasant encounter,” he recalls sadly. “But he was saying things about mum that we knew weren’t true, so the obvious conclusion was that h…