Mark McCloskey is an associate in the firm’s International Dispute Resolution Group, resident in the London office. His practice focuses on international arbitration, public international law and commercial litigation.

Mr. McCloskey represents clients in complex international commercial and investment disputes across a range of sectors, including the financial services, construction and oil and gas industries. He has experience of international commercial and investment arbitrations under the auspices of the ICC, ICSID and UNCITRAL rules. Mr. McCloskey has also advised clients in litigation proceedings in the Courts of England & Wales, and is a member of Debevoise’s Business Integrity Group.

Mr. McCloskey joined Debevoise as a trainee solicitor in 2014 and completed his training in the London office. He graduated from the University of Manchester in 2011 with an LL.B. (Hons). Between 2012 and 2013, he attended the University of Law in Guildford, where he completed his LPC with distinction.

Mr. McCloskey was admitted as a Solicitor of the Senior Courts of England & Wales in 2016.


  • University of Law, L.P.C.
  • University of Manchester, LL.B.

Bar Admissions

  • Solicitor, England & Wales