Former Britain’s Got Talent judge Simon Cowell reflected on his treatment of contestants while sitting behind the desk on the ITV talent show and revealed he regretted how he behaved towards budding singer Susan Boyle.  The 66-year-old music mogul first met Susan, 65, in April 2009, when she arrived at the Clyde Auditorium in Glasgow to audition for the third series of the programme with a rendition of ‘I Dreamed A Dream’ from the musical Les Misérables. Her surprising performance resulted in a standing ovation and a jaw-dropping reaction from the sceptical panel, which consisted of Simon and his co-stars at the time, Amanda Holden and Piers Morgan. The celebrity critics misjudged the West Lothian native based on her appearance when she stepped onto the stage, and almost two decades later, Simon seemed to regret his behaviour on that fateful day.  Susan went on to win second place at the series’s finale, losing out to dance troop Diversity, and earned herself an illustrious career as a professional singer that is still flourishing today.  During an interview on …