Raymond Platt, 56, and Joseph McCulloch, 50, were convicted earlier this month of being involved in the fatal attack on Tony Ferns on April 18, 2019. Platt - already a convicted killer - was jailed for a minimum 23 years following the trial at the High Court in Glasgow. Raymond Platt(Image: Police Scotland)The Court of Appeal in Edinburgh today confirmed lawyers for each are now challenging the conviction. READ MORE: Man due in court following 'murder bid' as woman in hospitalTony was said to have been murdered following a so-called feud with Park. Colquhoun had been the getaway driver with McCulloch earlier tracking Tony's movements.