A&O Shearman
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A&O Shearman ‘has a deep technical and commercial knowledge on complex derivatives’. Practice head Guy Antrobus, who focuses on risk transfer transactions and synthetic securitisations, leads a practice packed with well-established practitioners and emerging partner talent, whose expertise spans the entire waterfront of the market. Parya Badie ’sets the gold standard for excellence in legal practice’, and has a long and successful track record in complex and highly structured trades with a particular emphasis on significant risk transfer products, bespoke funding trades and structured credit. Ross Stewart is seen by one client as ‘the pre-eminent structured derivatives partner in the market’, showcasing particular expertise in equity financing. The ’exceptional’ Paul Allan concentrates on credit derivatives, strategic equity transactions and securitisation hedging, while Sara Couling ‘provides timely, concise and practical advice’ on derivatives in leveraged, acquisition, infrastructure and project financing transactions. Tanya O’Hagan is praised for her ’top-class legal skills and commercial attitude’, and stands out for advice on structured credit, repacks, capital relief trades, emerging markets and sustainability-linked deals.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- 'Ross Stewart is the preeminent structured derivatives partner on the market with a clear understanding of the commercial drivers and internal considerations that structuring teams will have to deal with on a regular basis makes the advice received that much more valuable. His experience in our space is second to none and consistently shows a willingness to help us create and develop initiative new products that require specific technical expertise.'
- 'A&O Shearman has one of the largest, broadest derivatives practice in London. They have a very broad range of strengths, and that is most helpful to our complex and bespoke derivatives work. Often issues may not be obvious on day 1 of the project, but as and when they come up, we can rely on the various teams at A&O Shearman to cover.'
Key clients
- European Investment Fund (EIF)
- European Investment Bank (EIB)
Work highlights
Advised the European Investment Fund (EIF) and the European Investment Bank (EIB) on Norway’s first green on-balance sheet Simple, Transparent and Standardized securitizations (STS), which closed in December 2024.


