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Provided by Duncan Speller
Duncan Speller is co-chair of the International Disputes Division of Duane Morris’ Trial Practice Group, representing clients in high-value and complex international arbitration and English High Court litigation.
He represents clients in ad hoc and institutional arbitrations. Mr. Speller has participated in arbitrations sited in civil and common law in England, New York, Hong Kong, Singapore, Dubai, France, Switzerland, Sweden, Denmark, Austria and Germany.
Mr. Speller works with clients in the aviation, oil and gas, mining and resources, insurance and reinsurance, private equity, telecommunications, technology, banking industries. He has represented companies in matters regarding transfer fees, production sharing contracts, mergers and acquisitions, aircraft lease agreements and competition law.
He has served as an arbitrator and as an emergency arbitrator for numerous institutions. He is ranked by Chambers UK (2025-2026) and Chambers Global (2024-2025)) for International Arbitration, and the Legal 500 UK (2025) also recognized him as a “Leading Individual.” Clients reported to Chambers that he has "flawless judgement and a very enviable work ethic" and is "very persuasive, tactical and is a great presenter."
Mr. Speller earned his B.C.L. from the University of Oxford.
Inns of Court School of Law, 2001
University of Oxford, B.C.L., 2000
University of Cambridge, B.A., 1999
Provided by Chambers
Provided by Chambers
Duncan Speller is fantastic. He is really analytical, has attention to detail and doesn't lose sight of the key principles.
Duncan is excellent. He is experienced and puts together a very good argument. He is always responsive.
I am very happy with Duncan's client service and commercial awareness. He has been supportive and goes beyond expectations to deliver results.
Duncan was very thorough and committed in his preparation. He understands the case well and I commend him as an advocate.
Duncan is a very professional lawyer with clear thinking and quick problem-solving.
Duncan Speller is fantastic. He is really analytical, has attention to detail and doesn't lose sight of the key principles.
Duncan is excellent. He is experienced and puts together a very good argument. He is always responsive.
I am very happy with Duncan's client service and commercial awareness. He has been supportive and goes beyond expectations to deliver results.
Duncan was very thorough and committed in his preparation. He understands the case well and I commend him as an advocate.
Duncan is a very professional lawyer with clear thinking and quick problem-solving.