London

70 St Mary Axe
London EC3A 8BE

Fax:+44 20 7626 7937

Map

Contacts

Thomas M. Thesing

Partner

tthesing@sidley.com +44 20 7360 2066

London

*Only admitted to practice in Illinois. Not admitted to practice in England and Wales.

About Our London Office

Located in the heart of the City, Sidley’s office in London — our largest in Europe — has served clients in the London market since 1974. Our London office is a key hub for the firm’s cross-border work, and our lawyers represent global businesses on their most complex matters across a variety of industries and areas of law. This includes such areas as antitrust and competition, capital markets, dispute resolution, employment, energy and infrastructure, global finance, insurance, investment funds, life sciences, M&A and private equity, privacy and cybersecurity, regulatory, restructuring, and tax.

Sidley has received 11 practice area and 31 lawyer rankings. Client praise includes:“Sidley Austin provide impeccable service levels and responsiveness.”
Chambers UK 2024

About Our Team

Our lawyers in London possess a deep understanding of the laws in multiple jurisdictions, providing clients with exceptional legal representation on the full range of litigation, transactional, and regulatory matters. The breadth of our service offerings in London is an important extension of Sidley’s global platform. Our lawyers are familiar with the cultures and fluent in the languages spoken in many of the countries where our clients are based. Harnessing Sidley’s ethos of teamwork and collaboration, the lawyers in our London office work closely with colleagues across the firm to assist clients in myriad legal disciplines.

“Sidley Austin are always very helpful in complex situations.”
Chambers UK 2024

Committed to Our Community

We are committed to investing in the success of future generations of leaders, as well as the greater London community.

Our ongoing partnership with the charity YMCA London City and North — including the recently opened VYBZ Youth Hub — allows our people to provide London youth with career guidance, as well as work experience opportunities at our London office.

Our office is equally committed to pro bono work. Sidley’s London office was honored to receive the “ESG Initiative of the Year” award at the 2024 Law.com International Women, Influence & Power in Law UK Awards in recognition of our partnership with Not Beyond Redemption, a nonprofit that helps mothers in prison re-establish contact with their children.

Regulation

Sidley Austin LLP is a registered limited liability partnership organised under the laws of Delaware and authorised and regulated by the Solicitors Regulation Authority (SRA No. 79075). A list of the names of the London office partners of Sidley Austin LLP is open to inspection at its principal place of business, 70 St Mary Axe, London EC3A 8BE, and such persons are either solicitors, registered foreign lawyers, European lawyers or managers authorised by the SRA.

Separate partnerships, which are affiliated with one another, are responsible for the operations of Sidley Austin’s offices around the world. Further details about our partnership structure can be found here, under “Collective Designations.”

Complaints

We are committed to providing high-quality legal services to all our clients. If you are a client and have a complaint about our professional behaviour, the services provided to you by the London office of Sidley Austin LLP, including a complaint about an invoice, please contact the partner handling the matter or your client relationship partner. If that does not resolve your complaint, you may use our complaints procedure set out below.

Financial Services

Sidley Austin LLP is not authorised under the Financial Services and Markets Act 2000 but we are able to, in certain circumstances, offer a limited range of investment services to clients because we are authorised and regulated by the Solicitors' Regulation Authority, which has complaints and redress procedures.

Modern Slavery Act Statement

This statement is made on behalf of the London office of Sidley Austin LLP pursuant to section 54(1) of the Modern Slavery Act 2015 and constitutes our slavery and human trafficking statement.

The Modern Slavery Act 2015 (“the Act”) requires large commercial organisations doing business in the UK to take steps to ensure that slavery and human trafficking are not taking place in their own businesses or in any of their supply chains, and to publish statements on their websites setting out the steps they have taken.

Sidley Austin LLP is committed to the constant improvement of our practices to prevent slavery and human trafficking from occurring within our business and supply chain. We expect the same high standards of our suppliers.

Our Business and Supply Chains

At Sidley, we strive to build and retain the best possible personnel and supply chains to support and help grow our business.

Given the nature of our business and our relatively limited supply chains, we consider the risk of slavery or human trafficking occurring in our business or supply chain to be low.

Our supply chain primarily comprises providers of goods and services, such as stationery and office equipment, that allow our personnel to provide legal advice to our clients. We also work with other sophisticated suppliers of legal services, including law firms in other jurisdictions and barristers.

Our Policies

We expect every member of the Sidley team to act in a manner which promotes the development of a workplace which is free from discrimination or harassment of any kind and which complies with all applicable laws. Our policies reflect that expectation.

It is also our policy to engage with our supply chain to confirm that our suppliers are adhering to the same high standards. In particular, key suppliers must provide details of the corporate and social responsibility policies they have in place, including in respect of issues covered by the UK Modern Slavery Act.

With regard to Sidley personnel, our policy is to provide appropriate and relevant training. In particular, training will be provided for those with procurement responsibilities, so that they are able to assess the risks of modern slavery and human trafficking in our business and supply chains.

This statement, and the steps taken by Sidley Austin LLP to ensure that our business and supply chains are free from slavery and human trafficking and to ensure that we remain in compliance with the Act, are reviewed regularly and updated as necessary.

This statement has been approved by the London partnership, represented by Thomas Thesing, the Managing Partner for the London office of Sidley Austin LLP.

This statement has been reviewed in consideration of Sidley’s activities and business for the previous financial year by John Casanova, Compliance Officer for Legal Practice for the London office of Sidley Austin LLP.

For a signed copy of this statement, relating to the previous financial year please click here.

London Gender Pay Gap Report

Diversity Statistics

For our diversity statistics, click here.

Achievements

Sidley Lawyers Named to the 2024 Pro Bono Recognition List

June 20, 2024

“The story of Sidley’s growth in London is very much connected to the growth of our global business.”

— Tom Thesing on Sidley's London Office

Achievements

Sidley Wins Two Awards at the Women, Influence & Power in Law UK Awards 2024

March 8, 2024