Santer officially left "EastEnders" in March 2010, and was replaced by Bryan Kirkwood. Kirkwood's first signing was the reintroduction of characters Alfie Moon (Shane Richie) and Kat Moon (Jessie Wallace), and his first new character was Vanessa Gold, played by Zöe Lucker. In April and May 2010, Kirkwood axed eight characters from the show, Barbara Windsor left her role of Peggy Mitchell, which left a hole in the show, which Kirkwood decided to fill by bringing back Kat and Alfie, which he said would "herald the new era of "EastEnders"." "EastEnders" started broadcasting in high definition on 25 December 2010. Old sets had to be rebuilt, so The Queen Victoria set was burnt down in a storyline (and in reality) to facilitate this.