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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 co-chairs the Tax Committee of the Law Society of England & Wales. She is a regular contributor to consultations with HM Revenue & Customs and the UK Treasury on the development of legislation and tax policy.

Lydia is ranked as a Leading Individual in Legal 500’s category, Corporate Tax 2021/22.

"Very knowledgeable, smart and straight to the point." Chambers & Partners, UK.

"A joy to work with and exceptionally good." Chambers & Partners, Europe.

Related articles

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News: 24 December 2021

A&O advising Reckitt on the proposed sale of E45

Allen & Overy is advising Reckitt Benckiser Group plc (“Reckitt”) as it enters into an agreement for the proposed sale of its E45 brand and related sub-brands to Karo Pharma (“Karo”) for an implied…

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Publications: 22 July 2021

OECD Pillars, the digital economy and minimum taxes

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Publications: 04 June 2021

Global Tax Insights: Uncertain tax positions: preparing for further tax disclosure

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Publications: 12 January 2021

Brexit certainty at last? An overview of the new EU-UK trading relationship

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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

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