Class Actions

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Class actions in Europe are on the rise, with a number of countries already adopting a US-style ‘opt-out’ model. 

CMS’ leading dispute resolution team helps clients to develop class action defence strategies aligned with their business priorities. We understand that class actions can have very significant financial and reputational impact, as well as absorbing considerable management time.

With one of the strongest European footprints of any major law firm, we can provide a cohesive defence of the largest matters, seamlessly handling multiple overlapping claims across a range of jurisdictions.

CMS is “a 21st century 24/7 powerhouse. Experienced team with all the skills necessary to deal with large scale commercial litigation”.

Client feedback, Legal 500 UK

"With CMS you get very good partner supervision, everyone on the team has the mindset of rolling their sleeves up."

Client feedback, Chambers UK, 2022

“We can’t think of any other better team to have on side than the CMS litigation team.”

Client feedback, Legal 500 UK 2021
07/07/2022
CMS European Class Ac­tions Re­port 2022
Data driv­en in­sights in­to  class ac­tion risk across Europe, a key con­cern for ma­jor cor­por­ates
09/02/2022
CMS Ex­pert Guide to European class ac­tions
 Class ac­tions have been on the rise in Europe for a num­ber of years, but the rate is ac­cel­er­at­ing. New pro­ced­ur­al devices in­ten­ded to bet­ter fa­cil­it­ate col­lect­ive re­dress con­tin­ue to be in­tro­duced. Of­ten these mech­an­isms op­er­ate on an opt-in basis,
Comparable
06/05/2022
Class Ac­tions Law Re­view, 6th Edi­tion 2022: Scot­land
Class ac­tions and ma­jor group lit­ig­a­tion can be seis­mic events, not only for the parties in­volved but also for whole in­dus­tries and parts of so­ci­ety. That po­ten­tial im­pact means they are one of the few...

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23/11/2022
Pro­tec­tion from protests
Protest on the streets, protest on­line, even lit­ig­a­tion used as a vehicle for protest.Protest­ors tar­get­ing a busi­ness may be stand­ing in a crowd, hold­ing a plac­ard or shout­ing slo­gans. But they may also be be­hind a com­puter screen or pur­su­ing a claim against the busi­ness through the courts. They may even be work­ing in­side the busi­ness, pre­par­ing to com­prom­ise its sys­tems or leak con­fid­en­tial in­form­a­tion.Wheth­er they are act­iv­ists, em­ploy­ees or cus­tom­ers, all these protest­ors may present a sub­stan­tial chal­lenge and a real threat to busi­nesses, in areas in­clud­ing its se­cur­ity, repu­ta­tion and bot­tom line. 
22/07/2022
As Deep Blue Something put it – “You'll say we've got noth­ing in com­mon”
The High Court in Lon­don has de­cided that a group of circa 3,500 claims for noise-in­duced hear­ing loss can­not pro­ceed via a single claim form. Back­ground In Dav­id Ab­bott & Oth­ers v Min­istry of De­fence...
08/07/2022
Com­pet­i­tion Ap­peal Tribunal gives guid­ance on pass-on claims
In a sig­ni­fic­ant rul­ing, the Com­pet­i­tion Ap­peal Tribunal (CAT) has re­flec­ted on the dif­fi­culties that arise when as­sess­ing an al­leg­a­tion that the vic­tim of a com­pet­i­tion law in­fringe­ment has passed on...
07/07/2022
CMS European Class Ac­tions Re­port 2022
Data driv­en in­sights in­to  class ac­tion risk across Europe, a key con­cern for ma­jor cor­por­ates
25/05/2022
Se­cur­it­ies lit­ig­a­tion – cometh the hour!
We now have the long-awaited de­cision of Mr Justice Hild­y­ard in Autonomy & ors v Mi­chael Richard Lynch & anr [2022] EWHC 1178 (Ch).  The judg­ment is long and deals with a mul­ti­tude of is­sues.  This...
06/05/2022
Class Ac­tions Law Re­view, 6th Edi­tion 2022: Scot­land
Class ac­tions and ma­jor group lit­ig­a­tion can be seis­mic events, not only for the parties in­volved but also for whole in­dus­tries and parts of so­ci­ety. That po­ten­tial im­pact means they are one of the few...
10/02/2022
Scot­tish court re­fuses ap­plic­a­tion by in­struc­ted law­yers to act as the...
In­tro­duc­tion In Ju­ly 2020, a new class ac­tion pro­ced­ure, termed “group pro­ced­ure” came in­to ef­fect in Scot­land (see our pre­vi­ous art­icles here and here). The first re­por­ted de­cision on Scot­tish group...
10/11/2021
Google de­feats Lloyd’s claim - but Su­preme Court breathes new life in­to...
Sum­mary In a highly an­ti­cip­ated judg­ment, the UK Su­preme Court today put an end to a class ac­tion against Google seek­ing dam­ages al­legedly in the re­gion of £3 bil­lion. The judg­ment has wide sig­ni­fic­ance...
26/08/2021
The fu­ture of sports data: Pro­ject Red Card and per­form­ance data
In the pre­vi­ous art­icle in this series, we ex­amined the patch­work of leg­al rights that can be used in the UK to as­sert a quasi “im­age right” and saw how ath­letes are in­creas­ingly as­sert­ing such leg­al...
20/08/2021
A new era: the UK cer­ti­fies an opt-out com­pet­i­tion class ac­tion for the...
In­tro­duc­tion In a sig­ni­fic­ant case for the UK’s com­pet­i­tion class ac­tion re­gime, the Com­pet­i­tion Ap­peal Tribunal (CAT) has cer­ti­fied (sub­ject to one con­di­tion) an opt-out col­lect­ive claim brought by...
03/08/2021
High Court nar­rows the scope of data breach claims – wel­come news for cor­por­ates
On Fri­day 30 Ju­ly the High Court handed down an im­port­ant judg­ment for busi­nesses at risk of lit­ig­a­tion fol­low­ing ac­ci­dent­al data breaches. This is an in­creas­ingly pre­val­ent is­sue. In March this year...
15/03/2022
Cy­ber and Data Breach Claims
We are pleased to in­vite you to a series of sem­inars for 2021/22 de­livered by the CMS Fin­an­cial Lines In­sur­ance Team. A key theme ob­served by our team over re­cent years is the grow­ing com­plex­ity of Fin­an­cial...