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Guy Antrobus



Antrobus Guy
Guy Antrobus



Guy is a partner in our London Derivatives and Structured Finance team, he leads on numerous matters relating to banks’ implementation of Initial Margin and was the lead English lawyer advising ISDA on the updated Phase 1 Initial Margin Credit Support documentation resulting from the WGMR initiative. Guy also authored all of the ISDA WGMR English law collateral opinions.

Guy is also the lead English lawyer advising ISDA on its regulatory review of Custodial Account Control Agreements for use with Initial Margin. Guy’s practice has a particular focus on issues relating to the EU Financial Collateral regime and regulatory capital. He is the author of a number of industry and client-specific legal opinions on netting, insolvency and collateral enforceability, including the ISDA English law industry netting opinion. On the transactional side, Guy has a particular focus on CRT/SRT risk transfer transactions. More broadly, Guy advises on all manner of OTC structured products, including TRS, financial guarantees, credit derivatives, hedging and stock lending/repo.

Guy is a member of various FMLC committees and the Secured Transactions Law Reform Project and is regularly invited to speak at industry forums on Margin.

Related articles

Publications: 22 May 2020

UK Insolvency Reforms and Derivatives: Impact of the prohibition on the operation of termination and certain other provisions

The UK Corporate Insolvency and Governance Bill (CIGB) was introduced to Parliament on 20 May 2020 and proposes to support the real economy by introducing certain reforms to give companies increased…

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Admitted as solicitor, England and Wales, 2003

Registered foreign lawyer, Hong Kong, 2005


BA, Modern & Medieval Languages, Robinson College, Cambridge University, 1999

LPC, Nottingham Law School, 2001

MA, University of Cambridge, 2002