Rhys Morgan is an associate in the Construction & Engineering group and International Arbitration practice of the London office. His primary area of work is international arbitration and particular commercial, construction and investor-state disputes.

Rhys's experience includes international disputes involving a wide variety of projects. He has represented clients in complex high-value arbitrations and adjudications. 

Prior to joining Mayer Brown, Rhys worked in corporate finance at a PE boutique, as an analyst at a top three management consultancy, as an independent consultant to a number of start-ups and corporates, and as a regulatory policy analyst at the Paris offices of an intergovernmental economic organisation. He joined Mayer Brown in 2018 as a trainee, and, during his training contract, spent six months seconded to Beazley’s M&A underwriting team.



  • Advising a West-African State in an ICC Arbitration against an international hotel operator in relation to breaches of a hotel management agreement.
  • Advising on a number of ICC arbitrations in connection with the design and construction of a major maritime project in Central America.
  • Acting for a leading Spanish contractor in relation to multiple ICC arbitrations concerning the development of solar power plants in North Africa and Sub-Saharan Africa.
  • Acting as Tribunal Secretary on a DIAC arbitration concerning the design and construction of an infrastructure project.
  • Advising a state oil company on contractual and tortious claims against a Middle Eastern state entity in relation to a gas supply agreement.
  • Advising Messrs Jak and Edward Sukyas in a pending arbitration under the UNCITRAL Arbitration Rules against Romania on the basis of US and Canadian bilateral investment treaties. 
  • Advising an international hospitality and entertainment company in relation to claims concerning the construction of a resort in East Asia.

Pre-Legal Career

  • Regulatory Policy Analyst, intergovernmental economic organisation (Paris)
  • Interim Head of UK Retail Reporting, top tier UK & Ireland gambling company 
  • Management Consultant, top tier management consultancy
  • Corporate Finance Analyst, private equity specialist advisory boutique


BPP University Law School, LPC

University College London, LLB

London School of Economics (LSE), BSc (Hons) Economics


  • England and Wales


  • SVAMC Young Professionals
  • London VYAP
  • Young ICSID
  • Young ICCA
  • LCIA – Young International Arbitration Group
  • Listed as a key lawyer for International Arbitration - Legal 500 2023/24.