Aidan Casey QC is a highly-regarded silk who specialises in heavyweight litigation and arbitration in the fields of commercial law, civil fraud, offshore, and corporate disputes. He is rated by The Legal 500 and Chambers and Partners as a leading silk in: Commercial Dispute Resolution, Offshore, and Civil Fraud.

Most of his cases are international and he has particular recent experience of disputes involving Russia/the CIS, the UAE, Mauritius, Cyprus, Sweden, the BVI, Malta, Switzerland, Bermuda and the Bahamas. He has been called (pro hac) to the Bars of Bermuda and of the Bahamas.

Recent examples of his practice include:

  • Acting over a number of years in a series of six international arbitrations in a dispute between the shareholders in a large Russian retail bank. This case has recently been described in The Moscow Times as a “high-profile case which rocked Russia’s business community and spooked both foreign and Russian investors alike” and as “the most high-profile business dispute of recent years”
  • Acting for the Kingdom of Sweden in relation to a complex €120m pensions fraud, carried out in Sweden and Malta, and also involving the UAE and the DIFC (see Sweden v Serwin [2020] EWHC 1251 (Comm), for the reported decision on an application for permission to enforce a worldwide freezing order in Sweden)
  • A further series of related LCIA arbitrations, and associated Cypriot litigation, concerning a hard-fought battle for control of one of Siberia’s largest open-cast coal mines.
  • A number of arbitral anti-suit relief applications and actions
  • Defending an unusual anti-suit injunction involving a Russian bank in Evison Holdings Ltd v International Co Finvision Holdings LLC [2019] EWHC 3057 (Comm)
  • Acting for many years for Aeroflot, the Russian flag-carrying airline, in the high-profile OJSC Aeroflot v Berezovsky litigation
  • Acting for the Government of the Bahamas in a dispute over oil exploration licences granted to the Bahamas Petroleum Company Plc
  • Acting for the Bermuda Police Commissioner in an important case concerning the protocol to be adopted in relation to potentially privileged material seized under MLAT legislation in conjunction with a very substantial US DOJ tax fraud investigation (Medlands (PTC) Ltd v Commissioner of the Bermuda Police Service [2020] SC (Bda) 20 Civ)
  • Regularly acting for the Government of Mauritius


Aidan is highly regarded in this area, Chambers and Partners 2021 quote him as: “A much-heralded commercial silk who excels in civil fraud cases involving injunctive relief and asset recovery. He frequently takes on instructions arising in foreign jurisdictions such as Russia, the Bahamas and Switzerland.

His peers feedback that “His written work is fantastic – it is very easy to read, very clear and concise.” “He is really analytical and very good on his feet.” “His attention to detail, responsiveness, general knowledge and expertise all stand out.” – Chambers & Partners 2021.

Also in the Legal500, he is referred to as ‘A thoughtful and considered leader who is not afraid to get into the trenches – an excellent team player who does not shy away from challenges.’

His commercial practice includes charterparty and other shipping disputes, arbitrations including in particular LMAA, LCIA and BIT arbitrations, and also carriage by road (CMR) cases.

In addition to commercial/contractual disputes, he also undertakes significant chancery-commercial cases, and has wide experience of domestic and international claims arising from shareholders’ and directors’ disputes and misfeasance, and share sale warranty claims.
Aidan has substantial experience of claims, including claims potentially running to in excess of £300 million, arising from the recent Libor-rigging events and from related interest rate hedging product sales. He also has a particular interest in similar claims arising from Forex-rigging, and has developed substantial market knowledge in that context.

His practice also includes significant volumes of domestic commercial fraud and asset recovery of all types, and fraud perpetrated by NHS contractors (he acts for a number of Health Authorities and associated bodies). He has substantial experience of urgent interim relief applications, particularly freezing injunctions and injunctions concerning restrictive covenants in both employment and share-sale contexts.

Aidan regularly appears in the Privy Council, on the full range of appellate issues which come before the Judicial Committee – commercial, constitutional and criminal. Recent representative cases have involved:

  • Attempts to evade land-ownership control and exchange control legislation in Bermuda.
  • Banking appeals for the Bahamas subsidiary of a private Swiss bank.
  • Large-scale confiscations under anti-money laundering legislation.
  • Advising a telecommunications provider in relation to the impending overhaul of the regulatory and statutory telecommunications regime in Bermuda.

He undertakes professional negligence work related to the commercial and business context, particularly in relation to accountants, solicitors and surveyors. His practice in this area has a growing emphasis on acting, mainly for lenders, in claims against surveyors and solicitors arising out of mortgage frauds and other over-valuations.

Aidan is able to accept instructions directly from members of the public, companies and other entities through the public access scheme (also known as direct access). Aidan has acted, advised and drafted pleadings and documents for a number of individuals and small and medium sized businesses on a direct access basis. He is happy to accept instructions on a direct basis in appropriate cases. If you wish to instruct Aidan on a direct basis, please speak to the clerks.

For more information on public access, please see the Bar Council website.

Aidan also has a busy and growing practice in the sports, media and entertainment field. He has acted for a number of Premier league footballers and also for agents in disputes involving the FA Agents Regulations and disputes with clubs, sponsors and others. He appeared for the defendant vendor in the very high profile claim RDF Media v Clements and has recently been engaged in a complex and wide-ranging libel case in the Court of Appeal involving a well-known Russian oligarch. He has also acted in a claim involving the sale of allegedly fake Francis Bacon drawings.

"An extremely experienced advocate who is approachable and affable." - Fraud: Civil - London (Bar)

Chambers & Partners 2022

"Bright, unflappable and incredibly user-friendly. His attention to detail is always impressive, and is particularly demonstrated in his cross-examination. He is quick to adapt to any issues that arise in a case." - Commercial Dispute Resolution - London (Bar)

Chambers & Partners 2022

‘ An all-round excellent barrister, a first choice on almost every fraud case. ’ Leading Silk - Fraud: Civil

Legal 500 2022

‘ Extremely thorough and diligent and able to get to grips with extremely complex matters very quickly. ’ Leading Silk - Offshore

Legal 500 2022

‘ An absolute pleasure to work with. He is extremely bright, tenacious, meticulous in his attention to detail and fantastic with clients. ’ - Leading Silk - Commercial Litigation

Legal 500 2022

"A very charming advocate." "He is extremely user-friendly and it is very easy to recommend him." - Commercial Dispute Resolution

Chambers and Partners 2021

"His written work is fantastic - it is very easy to read, very clear and concise." "He is really analytical and very good on his feet." "His attention to detail, responsiveness, general knowledge and expertise all stand out." - Fraud: Civil

Chambers and Partners 2021

‘A thoughtful and considered leader who is not afraid to get into the trenches – an excellent team player who does not shy away from challenges.’ - Leading Silks- Fraud: Civil

Legal 500 2021

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