very sorry to hear about Derek's death, he was a real gentleman and a great friend of the mountaineering world. Sitting writing this whilst in Patagonia makes it all the more poignant, Derek worked in a school down this way in his younger days and was integrally involved with the Whillans expeditions at the time, I can well remember his stories of those times and his impersonations of his great friend Don. Deepest sympathies from all at the BMC.