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England

Arbitrators

Guy Olliff-Cooper

Guy Olliff-Cooper

Position

Guy specialises in commercial disputes with a particular emphasis on civil fraud and cryptoassets. He frequently appears unled in both the High Court and the Court of Appeal, often against silks. He enjoys a busy offshore practice having been called to the Bar of both the BVI and the DIFC.

In September 2025, Guy was appointed to the Attorney General’s B Panel.

Guy’s recent reported cases include:

• Hulley Enterprises Ltd v Russia [2026] 1 Lloyd's Rep 493. A claim by the former shareholders of OAO Yukos Oil Company to enforce a US$50 billion arbitration award (the largest international arbitration award in history) against the Russian Federation.

• Dos Santos v Unitel SA [2025] KB 438. A £580 million claim against Isabel Dos Santos, daughter of the former President of Angola, in relation to sums allegedly due under loan agreements; now the leading authority on the merits threshold for freezing relief.

• Mex Group Worldwide Ltd v Ford [2023] EWHC 3394 (KB). An application for a freezing injunction under s.25 of the Civil Jurisdiction and Judgments Act 1982 in support of proceedings in Scotland valued at €68.5 million based on an alleged unlawful means conspiracy to induce breach of a consent order.

Career

Called: 2015
Attorney General’s B Panel: 2025

Memberships

Commercial Bar Association

Chancery Bar Association

Young Fraud Lawyers Association

Education

BPTC, City Law School (Outstanding)
GDL, City Law School (Distinction)
BA (Hons), Philosophy & Theology, Oxford

Personal

Loose and Griffiths on Liquidators 9th Ed. (2019). Contributor.

Transaction Avoidance in Insolvencies 3rd Ed. (2018). Contributor.

Mentions

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