Ant and Dec in BGT flashmob Ant and Dec have been showing off their moves in London's Trafalgar Square to film a huge flashmob for the next series of Britain's Got Talent. Hundreds of people - many dressed as cheerleaders or carnival queens - gathered to film the opening sequence for the television talent show. The dancers choreographed a routine to Queen hit Don't Stop Me Now. Ant McPartlin said: "It was great fun. The last time I danced in Trafalgar Square was after a night on the town. Declan Donnelly added: "It was good to dust off the old dance moves. PJ & Duncan would've been proud, although we got a few funny looks from the tourists. BGT is to go up against new BBC1 show The Voice when both programmes launch on March 24.