Mr Bates vs The Post Office - a new limited drama series focusing on 'the greatest miscarriage of justice in British legal history' - aired on ITV and ITV X on New Year's Day.The show follows the real life events of 2009, when a group of sub-postmasters formed the Justice For Subpostmasters Alliance, after a defective IT system called Horizon led to a slew of wrongful prosecutions of fraud, theft and false accounting. But while plenty of viewers went through a rollercoaster of emotions throughout the duration of the available four episodes, it was the final instalment that left fans the most teary eyed of all.