Plot: Alan Carr has been left in charge of Channel 4 HQ and is set to throw a New Year's Eve party to remember. He is joined by a host of special guests including Jonathan Ross, Micky Flanagan, Melanie Sykes, Gok Wan, Kirstie Allsopp, Alesha Dixon, Bruno Tonioli, Heston Blumenthal, Olly Murs, Paddy McGuinness, Rachel Riley and Shelley von Strunckel