Peter's careful and accurate programming and testing work for years on the Southern Water Income System helped make the lives of millions of people in Kent, Sussex, Hampshire and the Isle of Wight a tiny fraction easier by billing them accurately and helping them update their address when they moved - even though most people take such a level of service for granted. He was a valued member of the small team we worked in and his quiet patience and tolerance of the foibles of the rest of us and the demands of our employers make me glad I had the chance to work with him for so long. My only regret is that I did not know him when he was young and active.