CMS is an international law firm that offers legal and tax advisory services. It provides companies and organisations with advice on a full range of legal issues. CMS is the world’s fifth largest law firm by lawyer headcount and the 21st by revenue. Currently, CMS has 18 member firms with main headquarters in 12 European, four South American and two African countries.

Articles by Members

Introduction: Artificial Intelligence (Second Edition)

There is an oft quoted saying that a week is a long time in politics. The phrase is doubly relevant in a year which not only sees some 64 nations across the world (about 49% of the world’s population)...

6 Oct 2024

Introduction: Artificial Intelligence Law Over Borders Comparative Guide

5 Oct 2022

News About CMS

CMS pushes global revenue close to €2.2bn

Firm highlights corporate practice as biggest contributor as topline grows 4.8%

23 Jul 2026

CMS recruits Osborne Clarke’s international AI law chief in London

John Buyers brings more than 30 years’ experience in IT law advising on tech transactions

19 Jul 2026

CMS strengthens arbitration practice with London partner hire from BCLP

George Burn joins CMS’s London practice as London International Disputes Week opens with International Arbitration Day

31 May 2026

CMS makes up 54 in latest partner promotions round

Majority-female round focuses on Europe and corporate practice

18 Mar 2026

UK businesses could owe £18.6bn in unpaid taxes as ‘tax gap’ rises 40% in six years – CMS report

HMRC is increasing scrutiny on corporations, largely driven by inaccurate tax filings, global law firm reports

16 Mar 2026

CMS expands Harvey AI rollout to 7,000-plus lawyers

Law firm says software has saved its lawyers on average 118 hours per year

12 Dec 2025

CMS appoints infrastructure and energy disputes co-head as next UK managing partner

Adrian Bell will replace oil and gas specialist Stephen Millar in April next year

28 Oct 2025

CMS adds team of seven ex-BCLP lawyers in Hong Kong and one in Singapore

Hires follow BCLP’s decision to pull out of Asia earlier this year

18 Aug 2025

Value of UK class actions rises to €155bn even as number of filings falls, study finds

CMS report shows overall class action claims in Europe are declining

13 Aug 2025

CMS pushes global revenue past €2bn milestone

Firm highlights corporate practice as biggest contributor as topline grows 5.9% to €2.07bn

31 Jul 2025