Acting for both states and corporations, Simmons & Simmons' five-member public international law team fields specialists in international treaties, sovereign immunity, state succession, and international sanctions. The practice’s recent caseload covers the telecoms, utilities, energy, and financial services sectors; and it is increasingly mandated to advise on Energy Charter Treaty issues, as well as ESG matters. International arbitration group leader Stuart Dutson is ‘a star in the field’; Basil Woodd-Walker's specialisms encompass state immunity, international treaties and investor state arbitration; and public international law adviser Jonathan Schuman is ’able to run the most complex case like clockwork’.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘Simmons is one of the few go-to global firms for international arbitration matters.’

  • ‘Contrary to many of their competitors, they have managed to maintain a boutique feeling, with every case treated with the singularity of service it deserves.’

  • ‘Stuart Dutson is a star in the field, commanding respect, yet charming and accessible.’

  • ‘Clients love Stuart Dutson’s approachable and no-nonsense case management style.’

  • ‘Jonathan Schuman is the dream managing associate - able to run the most complex case like clockwork.’

Key clients

  • Kingdom of Spain

Practice head

The lawyer(s) leading their teams.

Stuart Dutson

Other key lawyers

Basil Woodd-Walker, Jonathan Schuman