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Private company

Olswang

Logo: Unknown author Unknown author, Public domain, via Wikimedia Commons3

Law firm

Olswang was an international law firm headquartered in London, United Kingdom and with additional offices in Reading, Brussels, Madrid, Paris, Singapore and, since 2011, Munich. It worked closely with a network of firms across eighty countries. The Lawyer ranked the firm 22nd largest in the UK by worldwide turnover in 2010.2 It was founded by Mark Devereux and Simon Olswang.1 It ceased to exist in 2017.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1981Founded1

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Olswang was an international law firm headquartered in London, United Kingdom and with additional offices in Reading, Brussels, Madrid, Paris, Singapore and, since 2011, Munich. It worked closely with a network of firms across eighty countries. The Lawyer ranked the firm 22nd largest in the UK by worldwide turnover in 2010. That year, the firm had over 600 staff, including 97 partners. David Stewart was the firm's chief executive. On 1 May 2017, Olswang merged with CMS Cameron McKenna and Nabarro to form CMS Nabarro Olswang LLP.2

The story

Founded by Mark Devereux and Simon Olswang in 1981.1

Olswang was founded in 1981 by Simon Olswang as a breakaway from property law firm Brecher & Co. Its early reputation was primarily based on film and media work. The firm grew rapidly through the 1990s, developing more of a focus on technology as well as media. In common with other professional service firms, Olswang converted to a limited liability partnership status under English law with effect from 1 May 2009.

Olswang brought libel actions against Bill Browder on behalf of Pavel Karpov of the Russian interior ministry, over the Magnitsky story.

From Wikipedia’s article on Olswang, shared under CC BY-SA 4.0.4

Leadership

Who has led Olswang, and when. Pick a name to see everywhere that person has worked.

Acquisitions

  1. Succeeded by CMS Cameron McKenna Nabarro Olswang1

Olswang merged with CMS Cameron McKenna LLP and Nabarro LLP on 1 May 2017 with the name CMS Cameron McKenna Nabarro Olswang LLP.

From Wikipedia’s article on Olswang, shared under CC BY-SA 4.0.4

Timeline

  1. May 1, 2017Dissolved Dissolved1
  2. 1981Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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