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Contact details

Allen & Overy LLP
One Bishops Square
E1 6AD
United Kingdom

Telephone icon+ 44 203 088 2674
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  Guy Antrobus



Guy was the lead English lawyer advising ISDA on the updated English law Initial Margin Credit Support documentation resulting from the WGMR initiative. Guy also authored all of the ISDA WGMR English law collateral opinions.

Guy was the lead lawyer advising a number of major dealers in the derivatives markets on the implementation of their collateral documentation resulting from WGMR, including on the Prime Services side.

Guy also advised ISDA on the ISDA 2016 Bail-in Article 55 BRRD Protocol.

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 opinions.

On the transactional side, Guy advises on all manner of OTC structured products, including TRS, financial guarantees, credit derivatives and stock lending/repo.

Guy is a member of various FMLC committees and the Secured Transactions Law Reform Project.

Professional qualifications

Admitted as solicitor, England and Wales, 2003

Registered foreign lawyer, Hong Kong, 2005

Academic qualifications

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

LPC, Nottingham Law School, 2001

MA, University of Cambridge, 2002

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