Lydia Challen
Partner
London
Lydia Challen
Partner
London
Contact Details
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.
Expertise
Practices
Qualifications
Professional
Admitted as barrister, England and Wales, 1995
Admitted as solicitor, England and Wales, 2007
Academic
Bachelor, University of Cambridge, 1993
Master, Oxford University, 1994
Related articles
Publications: 12 January 2023
OECD Pillars: Full steam ahead
2023 is set to be a year of change for the global tax landscape. After many years of negotiation, development and consultation, implementation of the OECD’s Pillar One and Pillar Two reforms to…
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.
Expertise
Practices
Qualifications
Professional
Admitted as barrister, England and Wales, 1995
Admitted as solicitor, England and Wales, 2007
Academic
Bachelor, University of Cambridge, 1993
Master, Oxford University, 1994
