By Carly Hacon & Mia O’Hare Britain’s Got Talent star Susan Boyle has been spotted at a public event supporting a fellow Scot. The singer made an unexpected appearance during the first leg of the Gladiators reboot. The 62-year-old was seen with contestant Kerry Wilson, who won her round and secured a spot in the semi-finals. Kerry shared a photo of them together on Instagram, writing: “What a night with the best family and friends at the ‘Watch Party’ that was some show @bbcgladiators put on!!!!” She added: “I even had a celebrity guest wanting to come watch too thanks for coming Susan. We enj…