Mark A.C. Diel
Name: Mark A.C. Diel
Firm Name: Marshall Diel & Myers Limited
Jurisdiction: Bermuda
Practice Area: Commercial Litigation Law

Telephone: (441) 295-7105
Fax: (441) 292-6814

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Professional Biography:

Leaders in Law endorses Mark Diel as our exclusively recommended Commercial Litigation Law expert in Bermuda. If you wish to get in touch with Mark, please use the contact information provided above.

Mark is a Director of Marshall Diel & Myers Limited with over 30 years of experience. After completing his pupillage in London, Mark started his practice in Bermuda in 1987 gaining a broad experience in criminal, civil, constitutional and administrative litigation.  Mark and fellow director Ronald Myers formed their law partnership in 1998 bearing the name Diel & Myers Limited. Diel & Myers quickly established a reputation as one of the top litigation firms in Bermuda.  In 2002, Marshall and Aicardi joined with Diel & Myers to become Marshall Diel & Myers Limited.


Mark is widely regarded as one of the top commercial litigators in Bermuda and he has developed his reputation as a tenacious and no-nonsense advocate.  He has appeared as advocate in all level of courts in Bermuda and has appeared before the Privy Council.  When necessary he works as part of an international team of commercial litigation attorneys and works closely with Queen’s Counsel and instructing attorneys from major firms in England, Canada and United States.

Mark has a wealth of litigation and corporate experience, and specialises in contentious commercial litigation.  He has appeared as counsel in most of the significant insolvency cases in Bermuda over the past 15 years across a number of business fields including funds, insurance and telecommunications. He was involved in the Focus case which developed ground breaking law in concerning the liability of Bermuda directors in relation to acts of negligence in an insolvent company.  His other significant cases have made new law and practice in relation to applicability and enforceability of RICO statutes, the roles of liquidators in litigation generally, the enforcement of overseas arbitrations and company compliance with anti-money laundering provisions.

While Mark’s current practice focuses on commercial litigation with particular emphasis on corporate insolvency, restructuring and bankruptcy, Mark has also been involved in some of the most important constitutional cases in Bermuda which assisted in defining the right to a fair trial and the right to protection from deprivation of property.

Mark also has extensive experience in administrative law in particular telecommunications law having been involved in litigation representing major service providers including the Bermuda Telephone Company, Logic Communications and Telebermuda International.

Mark’s clients benefit from their breadth of his ligation experience and knowledge. They appreciate his focused approach that keeps an eye on the realities of commercial litigation.  Mark is highly regarded by his clients for his thoroughness, litigation savvy and practical advice.

Notable Cases

  • Appeared for the company and the Bermuda Registrar of Companies in the IPOC liquidation
  • Appeared for a third party defendant in the Mentor liquidation
  • Appeared for the directors in the Apex Liquidation
  • Acted for a creditor in the Manhattan liquidation
  • Appeared for a creditor of the long term account in the matter of Lehman Re
  • Appeared for the liquidators of Stewardship Credit Arbitrage Fund
  • Appeared for the Petitioner in the Renaissance Capital Holdings proceedings
  • Appeared as counsel in the restructuring of Highland Crusader Fund
  • Acts for the Corporation of Hamilton in numerous legal and administrative actions
  • Capital Partners Securities Co Ltd v Sturgeon Central Asia Balanced Fund Ltd [Court of Appeal] [2018] CA (Bda) 5 Civ
  • St. John’s Trust Company (PVT) Limited v James Watlington et al [2020] SC (Bda) 19 Civ (26 March 2020)


  • Queen’s University, Ontario, Canada (B.A., Psychology, 1982)
  • University of Buckingham (LL.B., 1984)

Bar Admissions

  • England and Wales, 1984
  • Bermuda, 1985

Industry Associations

  • Member, Bermuda Bar Association
  • Former member, Bermuda Bar Council
  • Standing Member, Fees Complaints Committee, Bermuda Bar Council
  • Commissioner for Oaths
  • Notary Public
  • Justice of the Peace
  • Fellow, Chartered Institute of Arbitrators
  • Director, Bermuda Chamber of Commerce
  • Director, Bermuda Employees Assistance Program

Firm Description:

Whatever your legal needs may be, Marshall Diel & Myers Limited can clear the way to achieve your goals.  Our team of talented and dynamic lawyers is committed to satisfying the needs and objectives of our clients by providing practical, innovative and effective legal solutions. Our goal is to become trusted legal advisors to our clients. Our clients recognize and value this.

Marshall Diel & Myers Limited was selected as a finalist for “Offshore Firm of the Year” by the   prestigious “The Lawyer Awards 2019, in association with Travelers”. This nomination is a recognition of the firm’s legal excellence, hard work, breadth of experience, client service, and commercial strength.

Client Focused

Understanding, anticipating and satisfying our client’s legal needs is our top priority. We believe we set ourselves apart by our versatility and our willingness and ability to adapt to our client’s objectives. We approach matters in a collaborative manner working alongside clients and their advisors to devise and implement custom-designed legal solutions for their commercial, business or personal needs.

Creative Solutions

Our lawyers are multi-specialists and are equipped to handle a broad range of legal matters. We are versatile and can tailor our approach to bring together a unique blend of expertise, functional skills and practical experience. What distinguishes us is our ability to mobilise the resources of the firm to deliver timely, creative and cost effective solutions.

Exceptional Service

Our attorneys’ in-depth knowledge and vast experience in their practice areas allows us to deliver the highest level of service. We are renowned for our commitment to excellence, and our lawyers pride themselves on building their reputations for professionalism and integrity.

As an Employer

Our company prides itself on being an attractive, pleasant and enjoyable place to work, with employees who feel they are part of a family atmosphere.

The company was ranked first in the Top Ten Employers of the year for 2016 by business magazine The Bottom Line, a sister publication of The Royal Gazette. The award recognises that support, respect and consideration are at the forefront of the ethos of the Company, both in relation to our staff and our clients.

Working in an environment where we are motivated and content enables us to go above and beyond the ordinary so that we may provide the exemplary client service required to meet and surpass the individual needs of each case.