Tarek El-Diwany is a writer and consultant in Islamic banking and finance. He holds a BA Hons in Accounting & Finance from the University of Lancaster in the UK (1985) and is a founding partner of Zest Advisory LLP which provides consultancy on matters of Islamic economics to a wide range of institutional clients. Between 1996 and 1998 he headed the Islamic Finance Department at Prebon Yamane in London, and is the author of 'The Problem with Interest' and a contributor to the book 'People First Economics'.