Tiernan Fitzgibbon


Tiernan’s practice has a strong emphasis on insolvency and company law, arbitration, general commercial and property litigation.

Tiernan is regularly instructed in both County Court and High Court proceedings, whether that be in trial/multi day trial, or High Court and County Court injunctions.

Before joining the Bar, Tiernan was a Solicitor-Advocate (Civil) specialising in commercial litigation and arbitration. He trained at Allen & Overy LLP and on qualification joined Gibson Dunn & Crutcher LLP where he spent the next four years in practice.

Tiernan spent his first two years in practice in the Dubai office of Gibson Dunn where he gained considerable exposure to both DIFC and English Commercial Court litigation, international arbitration and also undertook a three month secondment in-house as General Counsel for a Saudi stock market listed firm.

On returning to Gibson Dunn’s London office, his practice focused more on English law governed disputes such as the equal value pay claim brought by shop staff against ASDA; Asda Stores Ltd v Brierley and other [2019] EWCA Civ 44.


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