By Seamus Duff Gladiators fans were left fuming on Saturday night as viewers were convinced they saw someone cheating on the BBC show. The latest episode of the revived series was the semi-finals – so expectations were high as some of the best civilian contestants were back to take on the athletic Gladiators and try to win a space in the grand final. Show hosts Bradley and Barney Walsh, aged 63 and 26 respectively, were back to introduce the latest challenges and watch on as the Gladiators took on the stadium. Betti Worth, a 31-year-old gym fitness trainer from Bolton, was back as a semi-final…