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The paper is focussed on the progress which has been made over 40 years in the science, technology and application of NDT/NDE both during manufacture and in-service, from the perspective of the author and his background in the energy industries in the UK. New techniques not dreamt of 40 years ago and new technology such as personal computers, lasers and robotics which are now common-place in everyday life have transformed some aspects of NDT. But other aspects have remained unchanged, including the continued use of the more basic NDT methods and the challenges of recruitment, training, certification and motivation of personnel. There have been major changes in the world scene over 40 years including the globalization of trade, the emergence of new countries as industrial powers, and the ageing of safety critical infrastructure. These have impacted on NDT business and on the activities of the international NDT community (including ICNDT, the International Committee for NDT). The paper concludes by introducing the activities championed by ICNDT to promote the understanding of the importance of NDT, to support the development of NDT Societies around the world, to educate users on the correct use of personnel certification and to pursue the objective of global harmonisation and recognition of third party certification. [ABSTRACT FROM AUTHOR]