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About Alistair

Alistair Calvert helps clients resolve disputes in the energy and infrastructure sectors, with a focus on disputes related to projects in the oil and gas, power and renewables space. He has acted on disputes relevant to all aspects of projects including procurement, engineering, operational and financing matters.

Alistair's practice encompasses high value international arbitration and litigation. He has over 15 years' experience acting on international arbitrations and conducts his own advocacy. He also provides advice on the management of legal risk during pre-action negotiations and specializes in mediation and other forms of alternative dispute resolution. He has a track record of engineering successful outcomes for clients.

Alistair is described by clients in The Legal 500 UK as "pragmatic and hands on" and as "a standout litigator." Alistair is currently ranked by Chambers and Partners.

‘Alistair Calvert is a standout litigator’ who understands ‘the legal dimensions of a case, and the commercial and human realities of a case.’
The Legal 500 United Kingdom, 2022


Recent Notable Matters

Leading Nigerian downstream oil and gas company — Two sets of related ICC arbitrations (now consolidated) relating to the acquisition of strategic assets across several jurisdictions in West Africa, brought by the national oil and gas company of a West African state. Sums in dispute were in excess of $400 million.*

Listed oil company — defending breach of warranty claims proceedings in the Commercial Court*

Oriental Energy Resources Limited — Represented an indigenous Nigerian oil and gas exploration and production company, in English Commercial Court proceedings arising out of the well-publicized collapse of Afren Plc. Sums in dispute were in excess of $1 billion.*

Listed international oil company — high-profile ICC arbitration regarding a dispute over cost sharing within a joint venture to develop an oil field offshore Ghana*

International oil and gas company — LCIA arbitration regarding a dispute concerning termination of an O&M contract, in connection with an oil field offshore Nigeria*

* Work completed prior to Bracewell

Publications and Speeches



St. Catharine’s College, University of Cambridge,
M.A., Law

Bar Admissions

Solicitor of the Senior Courts of England and Wales
Registered to conduct proceedings before the DIFC Courts




Performance Bonds – Call Me?

On-demand performance bonds are commonly used in international energy construction projects. They take the form of an undertaking by an issuing bank or financial institution, on behalf of an obligor, typically the contractor, to pay on demand a specific amount to a named beneficiary, typically the employer. Read the factors that an employer should consider when deciding whether to call a bond.



Chambers UK
Energy & Natural Resources: Disputes, 2022 - 2023 (Up and Coming, 2022 - 2023)
The Legal 500 United Kingdom
Dispute Resolution – International Arbitration; 2022 - 2023; Dispute Resolution – Commercial Litigation: Premium, 2022; Finance – Emerging Markets, 2022; Projects, Energy and Natural Resources – Oil & Gas, 2022