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Lydia Challen



Challen Lydia
Lydia Challen



Lydia specialises in all aspects of corporate tax, including M&A, corporate reorganisations and private equity tax. She regularly advises multinational corporate groups in relation to their tax affairs and on structuring issues. On the transactional side, she has extensive experience of advising in relation to disposals by public and private companies, complex financings (including restructurings) and corporate reorganisations. She is a member of the Tax Committee of the Law Society of England & Wales, and chairs its corporation tax sub-committee. She is a regular contributor to consultations with HM Revenue & Customs and the UK Treasury on the development of legislation and tax policy.

Lydia Challen is recommended as ‘authoritative and confident'. Legal 500 2014

Interviewees praise the "exceptionally able" Lydia Challen as being "very good at getting to grips with the complexities and cutting through the details." Chambers UK 2015

Lydia Challen earns considerable praise from interviewees, who report that "her technical skills are excellent and her ability to explain complex matters in a simple way is unparalleled." Chambers UK 2014

"The absolutely brilliant Lydia Challen is also held in the highest regard by clients". Chambers UK 2012



Allen & Overy LLP
One Bishops Square
E1 6AD

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Admitted as barrister, England and Wales, 1995

Admitted as solicitor, England and Wales, 2007


Bachelor, University of Cambridge, 1993

Master, Oxford University, 1994

Fraudulent emails

Please note there is a known fraud/scam currently using the Allen & Overy brand and Lydia Challen's name.

More information on fraud using the Allen & Overy brand can be found here.