 He was an active member of numismatic and philatelic communities, and a member of several specialist learned societies, including the British Numismatic Society (from 1970, silver membership medal, 1970), the Royal Numismatic Society (from 1973, Honorary Fellow from 1999), the Société française de numismatique, and was Chairman and Honorary Treasurer of the Surrey Postal History Group.He was particularly knowledgeable about medieval French coins, and made a significant contribution to the study of the gros tournois (published in "The Gros Tournois", Oxford 1997).He died on 24 December 2016.