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Lydia Challen

Partner

London

Challen Lydia
Lydia Challen

Partner

London

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

News & insights

A&O advises Network International on a placing of ordinary shares in connection with its acquisition of DPO Group to raise GBP205 million

News: 07 AUGUST 2020

A&O advises Network International on a placing of ordinary shares in connection with its acquisition of DPO Group to raise GBP205 million

Allen & Overy has advised Network International Holdings plc (Network International), the leading enabler of digital commerce across the Middle East and Africa, on its placing of ordinary shares in…

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Bill 7637 – Luxembourg adds the missing piece for the issuance and circulation of blockchain securities

Publications: 05 AUGUST 2020

Bill 7637 – Luxembourg adds the missing piece for the issuance and circulation of blockchain securities

Bill of law 7637 (the Bill) notably amends the Luxembourg act dated 6 April 2013 on dematerialised securities (the Dematerialised Securities Act 2013) by:

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Brexit hero image

Publications: 03 AUGUST 2020

Brexit and its impact on the cleared derivatives markets: a primer

The UK left the EU on 31 January 2020 and is in a transitional period that ends on 31 December 2020. During this period, EU law continues to apply in and to the UK and UK financial services firms…

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Hong Kong's Securities and Futures Commission (SFC) Enforcement Actions Tracker

Publications: 29 JULY 2020

Hong Kong's Securities and Futures Commission (SFC) Enforcement Actions Tracker

Our Enforcement Actions Tracker provides details of the SFC's enforcement actions in Hong Kong where fines of more than HKD1 million have been imposed. 

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Office

London

Allen & Overy LLP
One Bishops Square
London
E1 6AD

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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