Geoff Whitehead is one of the original Made Simple authors and has sold over 2 million Made Simple books. Before writing full-time he was Head of Professional Studies at Thurrock College, and he now runs a small business consultancy for one of the main publishers of account books. With day-to-day advice at a grass roots level he is still 'keeping it simple' for 350,000 book-keepers using the system each year.