I would have been an older employee, but it was Johnny Gapper as Jevs has said! I'm still young at heart though!!
I just googled John Gapper. What a legend, as a young man in the 60’s when everyone else was obsessed with herbicides and insecticides in gardening/horticulture, he quietly went the other way. Developing a love for native flora and downland butterflies.
https://www.theargus.co.uk/news/11591350.the-green-man-of-sussex/
A real environmental hero.