Bill began practicing law in New York in 1965 and came to London in 1975, when he opened the London and Jeddah offices for his firm. He has, over the years, been primarily involved in commercial transactions, specializing in banking, securities, mergers/acquisitions and investment funds, with a heavy emphasis on Middle Eastern and European clients and transactions.

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He has lectured and written extensively on doing business in the Middle East, particularly in Saudi Arabia.

Before Bill joined Trinity in 2003 he was a partner in Brown & Wood, a law firm which specialized in investment funds, securitizations, structured finance and capital markets.

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Bill joined Trinity in 2003 and served as Chairman from 2006 until 2022.

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Bill received his Bachelor of Arts from the Woodrow Wilson School of Public and International Affairs at Princeton and his Bachelor of Law from Yale Law School. He is a member of the Royal Institute of International Affairs (Chatham House), and the International Institute of Strategic Studies.

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Bill holds the FCA CF Client Dealing function.