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Olswang LLP
HeadquartersCannon Street
London, EC4
United Kingdom
No. of offices7
No. of lawyers500+
Major practice areasGeneral practice
Key peoplePaul Stevens [1] (CEO)
Mark Devereux (Senior Partner)
Dirk Van Liedekerke[2]
Date founded1981 (London)
Company typeLLP

Olswang was an international law firm headquartered in London, United Kingdom and with additional offices in Reading, Brussels, Madrid, Paris,[3] Singapore [4] and, since 2011, Munich.[5] It worked closely with a network of firms across eighty countries. The Lawyer ranked the firm 22nd largest in the UK[6][7] by worldwide turnover in 2010. That year, the firm had over 600 staff, including 97 partners.[6] David Stewart was the firm's chief executive.[8][9] On 1 May 2017, Olswang merged with CMS Cameron McKenna and Nabarro to form CMS Nabarro Olswang LLP.[10]

The firm's main practice areas included media, technology, telecommunications, real estate, corporate, intellectual property, commercial litigation and arbitration, finance, leisure, tax, EU and competition, and employment.[11]


Olswang was founded in 1981[12] by Simon Olswang and Mark Devereux,[9] who was the firm's senior partner.[8] as a breakaway from property law firm Brecher & Co.[13] Its early reputation was primarily based on film and media work.[9] The firm grew rapidly through the 1990s, developing more of a focus on technology as well as media.[13] 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 merged with CMS Cameron McKenna LLP and Nabarro LLP on 1 May 2017 with the name CMS Cameron McKenna Nabarro Olswang LLP.[14]

Olswang brought libel actions[15] against Bill Browder on behalf of Pavel Karpov of the Russian interior ministry, over the Magnitsky story

Main areas of practice[edit]


  1. ^ "Olswang elects IP head Stevens as new CEO". TheLawyer. Retrieved 14 May 2015.
  2. ^ "Olswang - Corporate Governance Our Board". Olswang website. Retrieved 26 January 2016.
  3. ^ "Olswang opens in Paris with partner hires from Dechert and local firm". Legalweek. Retrieved 25 August 2011.
  4. ^ "Olswang gears up for Singapore launch". Legalweek. Retrieved 9 September 2011.
  5. ^ Byrne, Matt. "Olswang opens Munich IP office | News". The Lawyer. Retrieved 25 August 2011.
  6. ^ a b Joanne Harris (11 August 2011). "Olswang". Thelawyer.com. Retrieved 25 August 2011.
  7. ^ "The Lawyer". The Lawyer. Archived from the original on 25 September 2011. Retrieved 9 October 2011.
  8. ^ a b Byrne, Matt (10 March 2010). "Olswang elections end with Stewart as CEO | News". The Lawyer. Retrieved 25 August 2011.
  9. ^ a b c "Mark Devereux | MediaGuardian 100 2010 | Media". London: The Guardian. 16 July 2010. Retrieved 25 August 2011.
  10. ^ "News | CMS, Nabarro and Olswang complete largest ever merger in UK legal sector | United Kingdom | CEE | International law firm CMS". cms.law. Retrieved 12 May 2017.
  11. ^ a b "Firms - Chambers Partners - Olswang". Chambersandpartners.com. 1 April 2011. Archived from the original on 4 August 2011. Retrieved 25 August 2011.
  12. ^ "Olswang LLP | Key Facts". Olswang.com. 1 May 2009. Retrieved 25 August 2011.
  13. ^ a b "Starting out strong - partners who founded their own firms". Legalweek. 29 September 2011. Retrieved 9 October 2011.
  14. ^ Downey, Sarah. "A UK legal merger which makes sense': CMS, Olswang and Nabarro vote in favour of union". www.legalbusiness.co.uk. Retrieved 12 May 2017.
  15. ^ Cohen, Nick (26 May 2018). "The unsavoury alliance between oligarchs and London's top lawyers | Nick Cohen". The Guardian. ISSN 0261-3077. Retrieved 23 June 2019.

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