William Smithson

Partner, SRS Advogados

William joined Simmons & Simmons as a trainee in London in 1987 before moving to Lisbon where he became a Partner in 2001, and then advanced to Managing Partner of the Lisbon office in 2004. Since 2009, William has been a Partner at SRS Advogados, and is currently a member of the SRS Advogados Administrative Board, as well as the firm’s Executive Committee.

Partner, Head of the Finance Department and Head of the Asia Desk of SRS Advogados, William Smithson is highly regarded within the corporate finance, banking, capital markets and real estate sectors. He advises investment banks and companies on a wide variety of finance matters, as well as public and private mergers and acquisitions, joint ventures and other related work. He also advises on debt and equity capital markets transactions and has established an active structured securities practice and advises a number of banks on regulatory issues. With more than 25 years of experience, William has extensive knowledge of the Asian market due to his experience of working in Hong Kong, PRC and Singapore.


IFLR writes that “the experience and excellence of William Smithson is particularly admired by Portuguese lawyers”, and adds "William Smithson [...] is the partner most often recommended, while the firm is commended by clients for its proactive approach and its ability to stitch together the legal and corporate framework on transactions". They further state that “William Smithson has in depth knowledge of Portuguese law and business. He is accessible and very experienced, has great enthusiasm for what he does, which makes him an excellent client lawyer."

Chambers Global says that "William is described as a smooth operator. He attracts widespread admiration, particularly for his outstanding work in securitisations. A number of major international clients extolled his hands-on approach and exceptional awareness of what is happening in the market".

Legal 500 notes that "William Smithson has managed to silence his critics through incredible action... and has spent 14 years cultivating a reputation for marvellous work in securitisation", and goes on to describe William as “one of the leading lawyers” for mergers and acquisitions work. Legal 500 described William has “one of the leading lawyers” for mergers and acquisitions work.