One of the first aircraft manufacturers in the UK, Martin & Handasyde, later to be known as Martinsyde Ltd, became Britain\u2019s third biggest manufacturer during the First World War and designed aircraft for the race across the Atlantic and from the UK to Australia. J. M. Bruce explains the history of this short-lived company and untangles the \u2018threads of development\u2019 that linked each of Martinsyde\u2019s aircraft types.\n\nThe recording concludes with a short question and answer session that includes reminiscences of George Handasyde\u2019s deputy in the years after he left Martinsydes.\n\nJ. M. Bruce MRAeS addressed a meeting organised by the Royal Aeronautical Society\u2019s Historical Group on 26 February 1968. The lecture was introduced by J. L. Nayler FRAeS FAIAA, the recording was digitised thanks to a grant from the RAeS Foundation and the podcast was edited by Eur Ing Mike Stanberry FRAeS.