John Wittich has lectured on London and architecture for many years, as a freelance and at various adult education colleges, the National Trust and summer schools. From 1962 to 1978 with Ron Phillips he pioneered walking tours in the City of London and its environs. A guide-lecturer of the London Tourist Board, he holds Fellowships of the Royal Society of Arts and the Ancient Monuments Society. He is a Freeman of the City of London and Liveryman of the Worshipful Company of Woolmen, a Member of the Court of the Worshipful Company of Parish Clerks (Master 1995-6), and represents the Company on the Senate of the City University. He is the Parish Clerk of St Mary Aldermanbury and a member of the Minor Order of Readers of the Church of England. His other Shire books are London's Inns and Taverns, London's Parks and Squares, London Villages, London Street Names and Off-beat Walks in London.