Derek started his long and active career in FMCG marketing as a graduate trainee with Cadbury Schweppes. He progressed to an international marketing role in Smith Kline Beecham (the precursor to GSK) and then became NPD Director for Bass brewers, the UK's largest brewer. In this senior marketing role he led a team which originated, developed and launched several multimillion pound brands which have stood the test of time to this day. In this latter role he became personally aware of the Marketing Clinic and recognized and actively used its unique methodology on several projects with success as a client. By his mid-thirties Thornton was Managing Director of Wrigley Chewing Gum in the UK. Previously he had been Head of New Products for Avon Cosmetics, Europe and Group Marketing Director of Cussons Imperial Leather. Encouraged by Unilever he founded The Marketing Clinic in 1984, where he continuously created, developed and improved many unique interconnected research methodologies to understand, predict and provide taste guidance to many global food and drink brands. The Taste Signature(R) has started a revolution in the way taste and flavour is evaluated and applied today.