David Alleyne is the CEO of GUL and was a co-founder of the company in 1998. He holds a PhD in Mechanical Engineering from Imperial College London.

His research at Imperial from 1987 addressed the exploitation of Lamb waves for the NDT of plate structures, followed by the pioneering foundational research on the guided wave testing of pipes. He has authored patents relating to guided wave testing equipment and was pivotal in the creation of the guided wave testing methodology, codes, standards and Level 3 certification.

He has been the driver for the global commercialisation of guided wave NDT and monitoring methods and is the acknowledged world leader in the industrial application of this technology. David leads all aspects of the business and has responsibility for the strategic vision and direction of the company. He has gained a wealth of invaluable experience from partners and clients from every corner of the world, which is reflected in the diverse and talented group of people within GUL and the emphasis placed on team work, quality, customer needs and innovation. David enjoys football and follows his team avidly throughout the season, in addition he cycles and enjoys music and meeting people.

In July of 2023, he was elected as a Director at Large for the American Society For Nondestructive Testing (ASNT).