This book looks critically at how gerontological knowledge in the UK has developed and changed over the last half century, framed by knowledge of the international gerontological literature and research. Rather than concentrating on reviewing and synthesizing the accumulated body of gerontological research, it looks instead at what can be learned from interviews with people who have been active in building the UK's gerontological knowledge base since the establishment of the British Society of Gerontology (BSG) in 1971, supplemented with a detailed examination of the Society's archives (held at the Centre for Policy on Ageing in London).