Gavin Mortimer is a writer, historian and television consultant whose ground-breaking book Stirling's Men remains the definitive history of the wartime SAS. Drawing on interviews with more than 60 veterans, most of whom had never spoken publicly, the book was the first comprehensive account of the SAS Brigade. He has also written histories of the SBS, Merrill's Marauders and the LRDG, again drawing heavily on veteran interviews. He was the historical consultant on the 2017 BBC documentary about the wartime SAS and he has visited France as a World War II tour guide with serving members of the Regiment.