Duncan Brack has co-edited and contributed to all three previous volumes of political counterfactuals published by Politico's or Biteback. He is also editor of the Journal of Liberal History, and has edited or co-written several reference books on the subject. Professionally, he works on international environmental policy.; Iain Dale is managing director of Biteback Publishing. He presents the Drivetime show on LBC Radio and is winner of the Arqiva Radio Presenter of the Year award 2013 and 2016.