Gregory Ekatah is joined by an allstar cast of the NOTSS programme. Five of the central figures involved in the development of the NOTSS taxonomy, its implementation into practice and steering into the future. Professors Rhona Flin, Steve Yule, and George Youngson are joined by Mr Simon Paterson-Brown and Dr Nikki Maran to reflect on the last 20 years of NOTSS. First of a two-part mini-series.