
Pillsbury Winthrop Shaw Pittman LLP‘s London practice has significant expertise in energy, construction, infrastructure, technology, insurance and life sciences arbitrations. Deborah Ruff's caseload includes representing both investors and states in bilateral investment and multilateral treaty cases, including under the Energy Charter Treaty; Julia Kalinina Belcher focuses on complex international disputes; and Charles Golsong is ’an excellent lawyer in this space’. The experience of Laurence Lieberman, a November 2024 arrival from Taylor Wessing LLP, includes high-value ICC arbitrations.
Legal 500 Editorial commentary
Accolades
Client satisfaction
Testimonials
Collated independently by Legal 500 research team.
‘Intelligence and industry knowledge.’
‘This is an experienced and skilled international arbitration team.’
‘They are well placed to handle disputes of all sizes.’
‘Deborah Ruff is an experienced professional in the IA arena.’
‘Deborah Ruff’s advocacy is top notch.’
‘Charles Golsong is an excellent lawyer in this space.’
Key clients
- Nexo
- Zain (KSCP)
- Dao Al Jomaih Inc FZE
- Nexo
Work highlights
Representing Nexo (and its subsidiaries) in its $3bn ICSID claim against the Republic of Bulgaria.
Assisting Mobile Telecommunications Company KSCP (Zain) with obtaining a permanent anti-suit injunction, following obtaining an LCIA award worth approximately $1bn.
Representing a longstanding Canadian pharmaceutical client in a dispute concerning a breast cancer treatment drug, the dispute involving complex arbitral procedural issues.
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.

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
Deborah Ruff
Other key lawyers
Julia Kalinina Belcher; Charles Golsong; Laurence Lieberman,