Dan Jones is Managing Director at Advanced Invasives and an Honorary Research Associate at Swansea University. In 2023 he concluded a 12 year field-trial on Japanese Knotweed control. This work is the most comprehensive undertaken in the world to date and is supported by the peer-reviewed journal article ‘Optimising Physiochemical Control of Japanese Knotweed’. Dan has provided evidence to UK Parliamentary Committees, authored government reports and delivered best-practice guidance. He has been instructed as an expert in more than 40 legal cases UK-wide, ranging from rural landholdings through to multimillion-pound development sites.