Hanna Roos

Founder, CEO and CTO

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Top Gun of dispute resolution

My story

Hanna is a globally acclaimed “rockstar” lawyer and one of the “highest-ranked” Global Thought Leaders in international arbitration (Who’s Who Legal 2024).  She has featured in Vogue and Harper’s Bazaar on account of her leadership in the law.   

Hanna is an advocate of the Supreme Court of England and Wales, with a pedigree at Oxford University (PPE), Cambridge University (Law) and Freshfields, Latham & Watkins and Quinn Emmanuel.  

Her specialty are Ultra High Networth disputes which require astute leadership and the deployment of targeted, rapid legal force to achieve the client’s commercial aims.  Her broad experience covers commercial and treaty arbitration, litigation and mediation in virtually all sectors, and she is particularly known for her AI, clean tech, pharma and biotech specialism.  She is praised for her “tremendous” and “formidable” advocacy.

Hanna lectures as External Professor.

Hanna is passionate about empowering leadership.  She also uses the law to lift those marginalised on account of their gender or race (see her Financial Times featured mandate here) and to protect the environment.  As a mother of two boys, Hanna feels strongly that “me too” is an important tool to achieve gender equality, but should not deprive men of a voice in today’s diversity dialogue.  She has recently interviewed Johnny Depp’s lawyer, Camille Vasquez, on this point.  Camille rightly reframed “me too” as “us too” – justice for all.


Solicitor, England & Wales

Solicitor, Ireland (on the roll)


University of Oxford, BA and MA in PPE (Balliol College)

University of Cambridge, BA and MA in Law

Previous associations

Quinn Emanuel 2018-2021

Latham & Watkins 2013-2018

Freshfields 2007-2013


English, Finnish (bilingual)

Swedish (acquiring)

Soft spots

Heating the family wood-burning sauna in Finland while configuring clients’ legal problems. In her free time, Hanna trains for triathlons and explores the world’s frontiers, having crossed the Atlantic with her husband in their sailboat.  That journey involved swimming with sperm whales in the wild in the Caribbean with their young sons.  She frequently blogs about balancing a career and family in order to help the next generations of parents



+44 7769 225735

Feedback from clients and research by Who’s Who Legal-Global Arbitration Review

  • “The best, brightest, hardest working and most relentless lawyer of her generation.”
  • “Her drafting is an absolute tour de force – nuclear weapons grade.”
  • Her “exceptional talent is matched by an extraordinary work ethic.”
  • “Hanna is amazing in every way, a real star.”
  • “She is a very strong advocate and arbitrator.”
  • “Astonishingly skilful international disputes lawyer […] the strongest possible recommendation for technology, investment banking.”  
  • “She is an excellent advocate and a smart lawyer who is able to grasp complex issues quickly.” 
  • “She displays great leadership and attention to detail.”
  • “Excellent at managing complex, voluminous disputes.” 
  • “Diligent and rigorous, and has a strong understanding of quantum issues.”
  • “We’ve been delighted and impressed beyond words with [her] creative and intelligent approach […] Hanna is your go-to trusted counsel in its purest sense: you know she will always have your best interests and your back at the core of her focus and advice.  She listens and delivers like no-one else we have ever worked with before!  You can literally go to war with her – be it in the courtroom or the boardroom.  Highly impressive!” 
  • “She is amazing at formulating and adapting the big picture strategy as well as the day to day evolution of huge, complicated, multi-jurisdictional cases with countless moving parts.”
  • “Understands clients’ needs well, and is always extraordinarily well prepared, and addresses complex issues with ease.”