England - London • Dispute resolution
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Competition litigation

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Simmons & Simmons

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From standalone and follow-on actions to cartel investigations, abuse of dominance proceedings, and collective actions, Simmons & Simmons is praised for its ‘user-friendly, pragmatic and commercial’ offering. The group acts for defendants as well as claimants, and is often assisted by an in-house litigation funding team. Patrick Boylan is trusted by clients in the energy, life sciences, TMT, and financial sectors. Other key figures include Eleanore Di Claudio, who plays a key role in the firm’s class action proceedings.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘An all-rounder. Simmons had good clients, good partners, and good associates and always delivers a high-quality product. ’

  • ‘Patrick Boylan is a fantastic partner, combining a firm grip of the law, superb client care and excellent litigation tactics.' 

  • ‘Class action experts. The team brings a wealth of competition knowledge to a case with a number of really impressive lawyers at all levels who are super smart. They easily integrate and become an extension of the in-house team.' 

  • 'Eleanore di Claudio is a partner in the making. Pragmatic, sharp and very easy to work with. She manages the team very successfully and knows the case inside out.' 

  • ‘The Simmons competition litigation team is really user-friendly, pragmatic and commercial. I refer work to them and enjoy working alongside them and on the other side from them.’

  • ‘Patrick Boylan is a complete standout litigator - both at competition litigation and commercial litigation.’

Key clients

  • BT Group
  • HMRC
  • LG
  • Google

Work highlights

  • Defending BT in the first opt-out class action to reach trial in the UK.
  • Representing HMRC in a competition claim against Mastercard relating to MIFs.  
  • Representing LG Electronics in a competition follow-on action brought by Granville Technology Group.

Lawyers

Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.

Practice head

The lawyer(s) leading their teams.

Patrick Boylan

Other key lawyers

Elizabeth Davison, Eleanore Di Claudio, Duncan Green