Andrew Lomas
Co-Head of International Arbitration and Litigation Practice
Andrew Lomas


  • Best Lawyers (2021)
  • Lawdragon Global Litigation 500 (2021)
  • The Legal 500 (2021)
  • Kommersant (2021)

21, 1st Tverskaya-Yamskaya Str., Moscow, 125047, Russia
Tel.: +7 (495) 935 8010; Fax: +7 (495) 935 8011

3 Gough Square, London, EC4A 3DE, UK
Regulated by the Solicitors Regulation Authority, SRA No. 492519
Tel: +44 (0) 20 7822 7060
Practicing barrister, regulated by the Bar Standards Board

Andrew Lomas is an English barrister with broad expertise in litigation and arbitration, including claims with cross-border and multi-jurisdictional elements. With a background in scientific research, Andrew has particular experience of cases involving complex or technical subject matter, including pharmaceutical and IT & software disputes, as well as intellectual property claims. He has an Oxford PhD in medicinal chemistry, small molecule drug design, taught synthetic undergraduate chemistry at Oxford for 3 years, and worked in pharmaceutical M&A before becoming a lawyer. During bar school, he worked as a consultant in competitive intelligence for Deallus, focusing on generics  and biosimilar launches. Andrew is also well-versed in the procedural complexities of litigation, something that is critical in designing a successful strategy.

As a member of the London barristers chambers One Essex Court, Andrew has been regularly instructed in high-value disputes as sole counsel. He has appeared as an advocate in the English High Court and Court of Appeal, as well as a range of arbitral tribunals including those under LCIA, ICC, HKIAC, and MKAS-ICAC rules.

Recent examples of cases he has worked on include:

  • multi-billion dollar dispute as to interpretation of a pharmaceutical collaboration agreement in English High Court and Court of Appeal;
  • fraudulent misrepresentation claim in the English High Court relating to commodity trading software;
  • multi-billion dollar LCIA claim relating to unpaid royalties under a patent licence;
  • ICC proceedings on behalf of a Russian bank involving cross-border insolvency issues;
  • English High Court proceedings relating to alleged breach of military supply contract;
  • ex parte injunction application on behalf of a financial institution for breach of confidence by a former employee.

Andrew has an undergraduate degree from Durham University and a masters and doctorate from Oxford University. He completed his legal training at City Law School, London, and is currently a visiting lecturer at the Centre for Commercial Legal Studies at the University of London.