MARK HILLIER is an author and historian, who, as well as being a member of the Royal Historical Society, is a Chartered Surveyor. A qualified pilot, he has flown for more than thirty years. With his main passion being the history of the RFC and RAF, he has researched, written, or co-authored twelve publications; his most recent works include the highly acclaimed Battle of Britain and Royal Flying Corps kitbag' titles.

Mark has contributed to, and assisted on, many other publications and magazine articles. He regularly appears on TV and radio programmes and is a frequent public speaker on aviation related historical subjects. Mark provides curatorial support for aviation museums and advises on items within their collections.