Walid Ghali is a Professor of Arabic and Islamic Studies at the Aga Khan University Institute for the Study of Muslim Civilisations, London and a specialist in Arabic manuscript studies. He also leads the Aga Khan Library in the United Kingdom. He teaches a range of subjects for MA students, including Introduction to Sufism, Arabic Literature, and Muslim Thinkers in the 19th Century. William Ryle-Hodges is a Senior Policy Advisor at the Department for Environment, Food and Rural Affairs (DEFRA). He was formerly a research associate at the Centre for Islamic Studies at the University of Cambridge, where he worked on Arab journalism in late 19th century Egypt.