Derek was born in Blackburn, Lancashire. He started hill-walking aged 12 and rock-climbing aged 15. Now been climbing for 51 years, but started inventing stuff aged 8! Worked variously as a teacher, property renovator, transport consultant and energy conservation researcher before realising that inventing things was what I did best. Founded Blizzard in 2000 to make a new design of emergency survival bags and blankets. Other inventions include “Slugs” (a type of slide nut formerly made by Faces) and the Ropeman (a prusiking device made by Wild Country). Now semi-retired, but still climbing, inventing things, and playing the saxophone.