By Jackie Annett Before Ant and Dec waved goodbye to audiences of Saturday Night Takeaway as the show takes a break after 22 years, they introduced a third man to the stage. Although he had the same build, crop of short brown hair, and beaming smile as the presenting duo, he won’t have been recognisable to many fans of the hit show. This is because Andy Collins is the ‘warm-up guy’ and is familiar only to those who have watched the programme live. Andy has been ‘warming up the crowds’ since the show began, and Declan Donnelly, 48, described him as “a genuine unsung hero of the show’s success.”…