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.
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: 20 December 2023
The UK gives the green light to a UK CBAM and consults on the UK ETS
The UK has finally confirmed that it will be following the EU and introducing its own Carbon Border Adjustment Mechanism (CBAM) to be implemented by 2027.
Publications: 19 June 2023
Publications: 17 March 2023
Publications: 12 January 2023
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.
Please contact inhouselegal@allenovery.com if you have been targeted.
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
