before O'Grady returned on Monday 21 April. However, O'Grady hadn't fully recovered, and Sykes had to be called in to do the following show on Tuesday. It was announced that Lorraine Kelly would host Wednesday's show, Brian Conley would host Thursday's show, and Shane Richie would host Friday's show. O'Grady finally returned on 28 April 2008. The show returned on 22 September 2008 for a new series which ended on 19 December 2008. Brand new titles were introduced as well as a slight revamp to the set. Series 7 of the Channel 4 show began on Channel 4 on 23 February 2009 and concluded its run on 22 May 2009. Series 8 of the Channel 4 show began on 21 September 2009. The series concluded on 18 December 2009 and was the last to air on Channel 4. During this series, it was announced that the popular pet, Buster, had retired, and on 23 November it was announced that Buster had died aged fourteen on 19 November 2009. A spokesman for the comedian confirmed the news by telling The Daily Mirror that O'Grady was "absolutely gutted". On Friday 18 December 2009, O'Grady presented his final show with an array of special guests; including Beverley Callard and William Roache, Honor Blackman, Natalie Cassidy, JLS, Scott Maslen, Joe McFadden, Linda Thorson, Melanie Sykes, Catherine Tate (appearing as Joannie "Nan" Taylor), Kate Thornton and The Teletubbies. Plus, other celebrities including Kim Cattrall, Whoopi Goldberg, Jonas Brothers, Alan Menken and Enrique Iglesias. O'Grady's own daughter, her partner and his grandchildren made a special good luck VT to say goodbye to O'Grady. All of O'Grady's best bits were also shown, as was the viewers' favourite ever clip of the show. ITV revival (2013–2015) The twelfth series (fourth on ITV) began airing on 11 November 2013 on ITV. It featured a new theme tune by McFly and a new, but similar set with features from previous series. A thirteenth series (fifth on ITV) was broadcast from 28 April until 30 May 2014. A third and final revived series on ITV began airing on 20 April 2015. Guest hosts While recovering from his second heart attack, Channel 4 insisted O'Grady should take a week off from presenting the show. This break occurred from 23 to 27 October 2006 and guest presenters hosted the programme for a day each. Since then, there have been three more scheduled guest-hosted