A man of huge intellect whose humility earned the respect and admiration of all his peers around the world. He gave inspirational leadership in his field of research providing mentorship and encouragement to any promising newcomer. He was an exceptional teacher dealing with the most complex concepts by taking them back to basic scientific principles. His loyalty and commitment helped to develop a scientifically sound research program within NHSBT such that his research legacy will long outlive him. Aside from his intellectual prowess, as a person his wry sense of humour and his joi de vivre made him a very valued friend and colleague. Dave you will not be forgotten may you now rest in peace my old friend. Angela Robinson