Since I99I he has worked for the Historic Cities Support Programme of the Aga Khan Trust for Culture, with projects in Zanzibar, Cairo, Samarkand and Mostar. Previous work includes the preparation of plans for the historical areas of Rome and Urbino, Italy, and for the old town of Lamu, Kenya, as well as consultancies for UNESCO and ICCROM. He has written books, articles and papers on various architectural conservation and town planning subjects, including "Zanzibar: A Plan for the Historic StoneTown" (1996) and "Planning Lamu: Conservation of an East African Seaport" (1986).(Source: AKTC)