Oliver Marsden

About Oliver Marsden

Oliver is a specialist in international arbitration.  He advises and represents companies and state governments in arbitrations under commercial contracts and investment treaties and related court proceedings. 

Oliver has experience across a broad range of sectors, encompassing energy (including renewables), banking/finance, insurance, pharma/biosciences, defence/aerospace, industrials, healthcare and entertainment. In particular, he has extensive experience of tax-related disputes against States and post-M&A disputes.  He conducts advocacy before arbitral tribunals and in the English courts, where he holds higher rights of audience.

Oliver is recognised in Chambers & Partners, Who’s Who Legal: Arbitration and The Legal 500 (and included in The Legal 500’s UK “Arbitration Powerlist”).

Recent work

• Representing a multi-national conglomerate in an LCIA arbitration against a healthcare company arising out of an M&A transaction.
• Representing an international energy company in three ICC arbitrations against a state government.
• Representing a leading solar energy company in an LCIA arbitration against a construction company relating to a dispute under a supply agreement.
• Representing an international mining company in relation to the enforcement of an arbitral award in the UK.
• Representing a leading biosciences company in an ICC arbitration against another biosciences company relating to a licensing dispute.
• Representing a leading global financial investor in an LCIA arbitration relating to a dispute under a financial instrument.
• Representing a leading entertainment company in an LCIA arbitration arising out of the cancellation of a joint venture project.
• Representing a leading fashion house in an 'ad hoc' London-seat arbitration against a distributor.
• Representing a Caribbean state entity in parallel ICC and UNCITRAL arbitrations relating to supply disputes under several agreements.
• Representing a South-East Asian state in an investment treaty arbitration against a dual-national investor.
• Representing an energy supermajor in an UNCITRAL arbitration arising out of a tax stability agreement with a state government.
• Representing an international energy company in an ICSID arbitration arising out of a production sharing agreement with a state government.
• Representing a private equity group in an LCIA arbitration relating to warranty claims under a share purchase agreement.
• Representing another private equity group in an HKIAC arbitration relating to a post-M&A dispute.
• Representing a major European bank in an ICC arbitration arising out of a corporate acquisition.
• Representing an international financial institution in: (i) an expedited LCIA arbitration arising out of a letter of credit dispute with a Middle Eastern trading group; and (ii) an ICC arbitration arising out of a joint venture for the development of a hydroelectric power plant.
• Representing an FX currency management boutique in an LCIA arbitration arising out of a joint venture with an international bank.
• Representing a satellite service provider in an LCIA arbitration against a satellite network operator relating to several long-term distribution agreements between the parties.
• Representing a private equity group in expedited expert determination proceedings against a multinational conglomerate relating to claims under an SPA.
• Representing an industrials company in expert determination proceedings against another industrials company relating to completion accounts under an SPA.