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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

laptop sitting on desk

Publications: 07 MAY 2021

The perils of giving video evidence

If evidence is to be given remotely, via video link, from another country, be sure to check that this is permitted by the laws of that country.

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building with flats

Publications: 07 MAY 2021

It’s coming after all: German real estate transfer tax reform on so called “share deals” adopted today

After much back and forth, the legislature (with the approval of the German Federal Council today) decided on the real estate transfer tax reform with effect from 1 July 2021.

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Landscape image of Hong Kong SAR at night

Publications: 06 MAY 2021

Hong Kong’s proposed Mandatory Reference Checking Scheme: the end of “rolling bad apples”?

The Hong Kong Monetary Authority (HKMA) released its consultation conclusions on the proposed Mandatory Reference Checking Scheme (MRC Scheme) on 3 May 2021.

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Person handling documents

Publications: 12 JANUARY 2021

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

Following months of protracted negotiations and coming four and a half years after the UK voted to leave the EU, 24 December 2020 saw the EU and UK finally agree the shape of their future…

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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

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.