Following the successful completion of their pupillages, William O’Hara, Rachel Wilson and Lachlan Hopwood have become members of Chambers with effect from 1 October 2025.

They will be clerked by George Hack.

William O’Hara

Will studied Classics and Law at the University of Cambridge, graduating with a starred first in Classics (with the highest mark in his year) and a double first in Law. He went on to take the BCL at Mansfield College, Oxford, where he graduated with a Distinction and won Law Faculty Prizes in Advanced Property and Trusts and Constitutional Theory. He then pursued postgraduate research at Exeter College, Oxford, where he obtained a Distinction in his MPhil. Before coming to the Bar, Will taught law to undergraduates at Oriel College, Oxford; volunteered as a FRU representative in the Employment Tribunal; and worked as a research assistant in insolvency law.

Will is developing a broad commercial practice across Chambers’ key areas of expertise. Particular highlights during pupillage include assisting with an application for permission to appeal in a letter of credit dispute; assisting with advice on the application of POCA 2002 to allegedly tainted supply chains; and assisting with a heavy cross-border bribery claim.

Rachel Wilson

Rachel received a first-class degree in English Literature and French from the University of Edinburgh and completed a Masters in Translation with a Distinction at the University of Bath. She achieved the top first in her cohort in the Graduate Diploma in Law and was awarded the prize for contract law before spending a year with the global litigation team at a multinational energy company, assisting in-house counsel on high-profile, multi-party litigation and international arbitration across a range of jurisdictions.

She is developing a broad commercial practice encompassing Chambers’ core areas. During her pupillage, she assisted on a range of complex matters, including an aviation leasing dispute, enforcement of on-demand payment bonds involving EU sanctions, and a Supreme Court appeal relating to alleged LIBOR/EURIBOR manipulation.

Lachlan Hopwood

Lachlan holds a dual Bachelor of Laws (Hons I) and Bachelor of Actuarial Science from Bond University, where he was valedictorian for business and law and received the John F Kearney Gold Medal in Law as the highest-achieving law graduate in his cohort. While working at A&O Shearman, he completed the Bachelor of Civil Law at Jesus College, Oxford, graduating with a Distinction and receiving the Law Faculty Prize for Commercial Remedies. He began practice in 2018 in Australia and has experience across debt capital markets, with a focus on sovereign bonds and corporate hybrid securities. He worked as a NSW-qualified solicitor at A&O Shearman in London and at King & Wood Mallesons in Sydney.

He practises across Chambers’ core areas. During pupillage, he gained experience in a wide range of practice areas, including administrative and public law, aviation and travel, banking and finance, civil fraud, commercial disputes, company-related matters, financial services, insurance, international arbitration, professional discipline, and professional negligence.