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Jonathan Crompton focuses his practice on representing global financial institutions, multinational corporations, asset managers and investment advisors in cross-border litigation and arbitration, and in contentious regulatory matters.

Mr. Crompton represents his clients in proceedings before the courts of Hong Kong (appearing as advocate where appropriate) and England and Wales, as well as in arbitral proceedings, helping his clients to obtain a wide range of interlocutory and final relief. In his contentious regulatory practice, Mr. Crompton represents clients in regulatory investigations by the Hong Kong Securities and Futures Commission into alleged market misconduct and regulatory infringements, and before the Hong Kong Police.

Mr. Crompton presents at conferences and has published articles on data privacy and cyber security, the effective use of electronic discovery and the impact of the U.K. Bribery Act and U.S. Foreign Corrupt Practices Act, among other things.

Significant Representations

  • A global financial institution on a dispute (with proceedings before the English and PRC courts) involving a foreign exchange hedge transaction with a mainland Chinese counterparty.
  • An Asian-based asset manager with over US$500 million in AUM in a complex hedge fund start-up dispute in the High Court of Hong Kong, including claims for declaratory relief and damages and related unfair prejudice and statutory derivative proceedings.
  • An investment fund with over US$2.5 billion in assets under management in successfully defending proceedings before the High Court of Hong Kong seeking disclosure of documents for use in New York proceedings.
  • A global auction house in responding to a witness subpoena issued to it in third party proceedings before the High Court of Hong Kong.
  • An international IP rights company in an arbitration against a manufacturer for breach of an exclusive distribution agreement.
  • A multinational pharmaceutical company in defending arbitral proceedings administered by the ICC brought by a distributor for alleged breach of a distribution agreement.
  • A U.S.-based multinational conglomerate in seeking enforcement of an arbitral award of approximately US$300 million against a BVI incorporated company operating in the PRC, including successfully obtaining an order to set aside a fraudulent transfer and having a PRC individual committed by a Hong Kong court for contempt. 
  • A U.S.-listed Chinese green energy company in seeking recognition and enforcement in Spain of an arbitral award of approximately US$25 million against a Spanish solar panel distributor, granted in ICC administered arbitration proceedings seated in Hong Kong.
  • A Middle Eastern sovereign pension fund in a dispute with its investment manager over the return of US$100 million, including investigations by the SFC and the Hong Kong Police and proceedings before the Royal Court of Jersey.
  • An investment fund with over US$2.5 billion in assets under management in a dawn raid and subsequent investigation by the SFC into alleged market misconduct.
  • A global financial institution on numerous disputes concerning the sale of financial derivative products to private wealth clients, including responding to regulatory enquiries and investigations by the Hong Kong Securities and Futures Commission and potential civil proceedings before the courts and in arbitration under the UNCITRAL Rules administered by the ICC.

Includes matters handled at Dechert or prior to joining the firm.


King’s College London, LL.B. (Hons), 2002

Bar Admissions/Qualifications

England and Wales
Hong Kong


Law Society of England and Wales
Law Society of Hong Kong