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Contact with chambers should be made through the Practice Management Team. They are happy to discuss client requirements and provide further information on such matters as the expertise and experience of individual members, fees, working practices and languages spoken. We have members able to work in French, German, Italian, Spanish, Dutch, Swedish, Greek and Chinese (Mandarin).

Outside working hours, a member of our team is always available to be contacted on matters of an urgent nature. Contact should be made using the Chambers main number or email.

For our Singapore office, for client enquiries please contact our Head of Business Development for Asia Pacific, Katie-Beth Jones, and for all other queries please contact Lynn Quek. Out of office hours calls will automatically be diverted to our practice management team in London.

London

20 Essex Street
London
WC2R 3AL

enquires@20essex.uk
t: +44 20 8133 3810

Singapore

28 Maxwell Road
#02-03 Maxwell Chambers Suites
Singapore 069120

enquires@20essex.uk
t: +45 36988379

Contact

Contact with chambers should be made through the Practice Management Team. They are happy to discuss client requirements and provide further information on such matters as the expertise and experience of individual members, fees, working practices and languages spoken. We have members able to work in French, German, Italian, Spanish, Dutch, Swedish, Greek and Chinese (Mandarin).

Outside working hours, a member of our team is always available to be contacted on matters of an urgent nature. Contact should be made using the Chambers main number or email.

For our Singapore office, for client enquiries please contact our Head of Business Development for Asia Pacific, Katie-Beth Jones, and for all other queries please contact Lynn Quek. Out of office hours calls will automatically be diverted to our practice management team in London.

London

20 Essex Street
London
WC2R 3AL

enquires@20essex.uk
t: +44 20 8133 3810

Singapore

28 Maxwell Road
#02-03 Maxwell Chambers Suites
Singapore 069120

enquires@20essex.uk
t: +45 36988379

Andrew Dinsmore

Andrew Dinsmore

Call: 2013 (England and Wales); 2018 (Northern Ireland)

Andrew has extensive international commercial litigation and arbitration experience. His practice focuses on cybersecurity fraud, banking, shipbuilding, shipping, energy, insurance and sport. He is often instructed to appear both as junior counsel in complex, multi-jurisdictional, high-value cases and as sole counsel in the Commercial Court, Chancery Division and in arbitration.

Andrew is ranked by the legal directories, including in commercial litigation (L500 tier 5; C&P band 6), civil fraud (L500 tier 4; C&P band 5), shipping (L500 tier 4), commodities (L500 tier 2) and international arbitration (L500 tier 3).

          • “Andrew is a forceful and tenacious advocate. He’s hard-working and produces good results” (Chambers & Partners 2025)
          • “Andrew is an excellent drafter and a good legal researcher. He is very bright, very targeted in his advice, easy to work with and approachable” (Chambers & Partners 2025)
          • Andrew is clear in his advice and responsive. His advocacy is first-class: clear and addresses the points to hand” (Legal 500 2025)
          • A brilliant communicator, problem solver and advocate. He is able to find solutions quickly to complex legal and procedural issues” (Legal 500 2024)
          • Highly intelligent, commercially aware, and exceptionally efficient” (Legal 500 2023)

Andrew is often led in complex high-value, international cases:

  • Renaissance Securities (Cyprus) Limited v Chlodwig Enterprises Limited [2023] EWHC 3160 (Comm) – acting in a US$130 million anti-suit injunction to support a London arbitration (led by Paul Lowenstein KC) and acted sole counsel in this hearing which considered the requirements for naming individuals in a penal notice and dispensing with personal service for the purposes of anticipated contempt proceedings.
  • Trafigura v Gupta in which he is acting for the Claimant in a US$600 million international nickel fraud (led by Nathan Pillow KC).
  • E,D & F Man Capital Markets Limited v Come Harvest Limited & others [2022] EWHC 229 (Comm) in which he acted for the Tenth Defendant in a US$300 million fraud concerning forged warehouse receipts in the context of commodities repurchasing agreements (led by David Lewis KC), which went to the Court of Appeal twice: on jurisdiction, [2019] EWCA Civ 2073, and on the application of the res inter alios acta principle, [2022] EWCA Civ 1704.
  • Durnont Enterprises Limited v Fazita Investment Ltd [2023] EWHC 1294 (Ch) in which he acts for the Claimant in a €100 million Part 19 derivative fraud claim (led by Philip Riches KC). The Court of Appeal considered aspects of the High Court’s decision on permission to continue the derivative action under CPR Part 19 at [2024] EWCA Civ 299.
  • Newco 10 SARL v Formal Holdings Limited, in which he acts for the Claimant in a €100 million conspiracy to defraud a company by its CEO and his co-conspirators (led by Andrew Ayres KC), during which he appeared unled in an application to uplift security for costs, [2023] EWHC 1112 (Comm).
  • Jiangsu Guoxin Corporation Ltd (formerly known as Sainty Marine Corporation Ltd) v Precious Shipping Public Co. Ltd [2021] 1 Lloyd’s Rep. 413, in which Butcher J held that the prevention principle did not apply to the amended SAJ Form in the context of 11 inter-linked ship-building arbitrations (led by Duncan Matthews KC and Roderick Cordara KC).
  • Nigerian AGIP Exploration Ltd v GEC Petroleum Development Company Ltd [2021] EWHC 1412 (Comm) in which he obtained an anti-suit injunction in support of a US$200 million ICC arbitration concerning oil rights in Nigeria (led by Sara Masters KC).

Andrew also acts regularly as sole counsel:

  • Across two (related) LCIA arbitrations in a US$400 million international conspiracy claim concerning bribery of the claimant’s former directors by their counterparty to a long-term petrochemicals contract.
  • Renaissance Securities (Cyprus) Limited v Chlodwig Enterprises Limited [2024] EWHC 2460 (Comm) – Andrew appeared for the claimant, unled, in seeking an amendment to an anti-suit and anti-anti-suit injunction supporting a US$130 million London arbitration where the defendants were taking steps to maintain Russian proceedings in breach of the original ASI and AASI.
  • LCIA Arbitration – acting as sole counsel in a US$40 million and a US$10 million commodities dispute.
  • Horizon Maritime Services Ltd v CNS Marine Nigeria Ltd [2023] EWHC 1419 (Comm), which established that it is not necessary to obtain permission to serve out an order with a penal notice on named directors who were not parties to the proceedings but could be the subject of later contempt proceedings. This issue arose in the context of the Claimant obtaining an asset disclosure order to enforce unpaid arbitration awards.
  • Giddens v Frost [2022] EWHC 1022 (Comm), in which he acted in a full day of cross-examination in the High Court on limitation in a fraud claim.
  • Tonstate Group Limited v Wojakovski [2021] EWHC 1122 (Ch), in which he successfully argued that money held on account by solicitors were not ‘assets’ of the respondent to a freezing injunction and obtained indemnity costs, [2021] EWHC 1995 (Ch).
  • Schenker Ltd v Negocios Europa Ltd [2018] 1 WLR 718, in which he successfully extended the freight rule to airfreight.

He regularly publishes articles for the New Law Journal (NLJ), the Journal of International Banking and Financial Law (JIBFL), the European Business Law Review and the Lloyd’s Maritime & Commercial Law Quarterly. He also sat on the Commercial Bar Association (COMBAR) Brexit Working Groups, which published papers on the impact of Brexit on private international law and on international arbitration.

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Robust beyond his years of call, and his written and oral advocacy are clear and persuasive.

The Legal 500 UK Bar 2024

Andrew is tenacious, hardworking and well-versed in the law of civil fraud. He expresses himself clearly, in writing and orally, and is able to keep focused and stick to his guns.

The Legal 500 UK Bar 2024

A brilliant communicator, problem solver and advocate. He is able to find solutions quickly to complex legal and procedural issues.

The Legal 500 UK Bar 2024

Andrew is extremely user-friendly and approachable and commercial. He understands the clients' concerns and is equally formidable when it comes to his grasp of the law.

The Legal 500 UK Bar 2024

He is very user-friendly indeed, grounded and willing to put his shoulder to the wheel, handling advocacy with considerable cogency and focus.

The Legal 500 UK Bar 2023

Highly intelligent, commercially aware, and exceptionally efficient.

The Legal 500 UK Bar 2023

A tenacious advocate with a very good eye for detail who offers proactive and practical comment and advice.

The Legal 500 UK Bar 2022

Hard-working, creative and pro-active.

The Legal 500 UK Bar 2022

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