Legal System:
Civil Law, Common Law, European Law, International Law
Practice Areas:
Arbitration, Commercial Law, Construction - Engineering, E-business, Energy - Natural Resources, Information - Communication Technologies, Infrastructure, Insurance, Joint Ventures - Consortia - Cooperation, Oil - Gas - Mining, Public international Law, Transport
Jurisdiction:
United Kingdom
Publications
Please see CV
Teaching
Visiting Professor, Mario Negri Institute & University of Milan, Italy
Education
University of Oxford BA Hons MA Oxon;
University of Cambridge BA Hons MA Cantab
Other Information
Hanna is a Global Leader in international arbitration and a Solicitor Advocate in the English Supreme Court. She is an independent practitioner at Hanna Roos Dispute Resolution (www.hannaroos.com) where she acts as counsel in arbitrations and litigations, sits as arbitrator and serves as an External Professor. She co‐counsels with leading firms, including with Professor Gary Born at WilmerHale. Hanna previously practised at Freshfields
Bruckhaus Deringer LLP (then the globally #1 ranked practice by GAR), Latham & Watkins LLP and
Quinn Emanuel Urquhart & Sullivan UK LLP. Hanna was educated at Oxford University and Cambridge
University.
A client on a seven billion arbitration comments that:
“I’ve worked with or against most of the major international arbitration practices. I can say hands down that Hanna is the best, brightest, hardest working and most relentless lawyer of her generation. Hanna is incredibly clever. 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 […] She is absolutely a super star and will no doubt be one of the legendary arbitration
practitioners of her generation by the time she is done”.
The elite quantum expert John Ellison at FTI notes that:
“I have worked with Hanna in two large international arbitrations. She is an exceptionally able and hard working lawyer, fantastically good at drafting, who is also
pleasant to work with. A total star – the best of her generation.”
Professor Roos is complimented as “formidable” and “exceptional”, and recognised in the directories
as “a real star” whose “exceptional talent is matched by an extraordinary work ethic”. She is a “tremendous advocate” who is “excellent at managing complex, voluminous disputes”. Hanna:
- “understands clients’ needs well, and is always extraordinarily well prepared, and addresses
complex issues with ease”,
- “is diligent and rigorous, and has a strong understanding of quantum issues”, and
- “is very impressive and on the ball when handling arbitrations across various sectors, from energy to life sciences”.
In addition to being ranked in the “Who’s Who Legal: Arbitration” of 2022 and 2021 as a Global Leader,
Hanna is on the International Arbitration Powerlist (UK) and is ranked for International Arbitration in
Legal 500 UK 2022, 2021 and 2020. She was recognised as a Who’s Who Legal Future Leader in international arbitration in 2020, 2019 and 2018.
Hanna represents some of the world’s leading companies and states in high-value commercial and treaty arbitrations and litigations. Her practice covers pharma, biotech, life sciences, energy (incl. oil, gas, nuclear and renewable) sectors, and also banking, private equity, insurance, telecoms, commodities, consumer goods, satellite & aerospace.
Hanna's research focuses on innovation incl. seminal work on cybersecurity in arbitration. She sat on the CPR arm of the ICCA-CPR-NYCityBar working group whose draft Cybersecurity Protocol won the 2018 GAR Best Development Award. She publishes widely, including in Butterworths Challenges in Arbitration(LexisNexis), and lectures globally, including in Scandinavia where she hails from.
Hanna is passionate about teaching and mentoring and serves as External Professor for a Masters program in pharmacology in association with Milan University, and was awarded Women in Law Awards 2017 & 2018 – Medicine and Ethics for her expertise.
While practising at Latham & Watkins, Hanna co‐founded and co‐led the global Parent Lawyers Group to ensure that fathers and mothers can excel and progress in the law, and oversaw award winning pro bono initiatives in Latham’s London office. Hanna was shortlisted for the 2016 WeAreTheCity Rising Stars from nearly 1,000 nominations across sectors, partly in recognition of these initiatives.
Her free time revolves around her eye-surgeon husband and two cheeky sons, triathlon training, sailing, a steady mountain of washing, and kettle bells.
Independent Arbitrator;
Founder - Hanna Roos Dispute Resolution (www.hannaroos.com);
Of Counsel - Quinn Emanuel;
Associate and Senior Associate - Latham & Watkins;
Trainee Solicitor and Associate - Freshfields Bruckhaus Deringer;
Intern - McKinsey & Co;
Intern - Finnish Foreign Ministry
