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Stewarts Law LLP

Work 020 7822 8000
Fax 020 7822 8037
Leeds, London

Fiona Gillett

Work 020 7822 8000
Stewarts Law LLP

Work Department

Commercial Litigation and Securities Litigation


Partner in the Commercial Litigation and Securities Litigation departments. 

Fiona specialises in complex commercial disputes for a range of national and international clients, both corporates and individuals, and in securities claims for a range of institutional investors such local authorities, pension funds, charitable foundations, and investment and fund management companies.

Fiona advises on high-value domestic and international contracts, commercial fraud and tort disputes, with a particular expertise in financial services claims against banks.

She is experienced in coordinating proceedings in other jurisdictions, including working with foreign lawyers, investigators and forensic accountants.



Fiona joined Stewarts as a partner in 2010 after spending four years at litigation boutique Masseys LLP, the last two as a partner. (Masseys merged with Stewarts in 2010.) In the six years prior to that, she was at Baker & McKenzie, London (with one year in their Toronto office).


French (fluent); Spanish (conversational); German (basic).


LSLA (London Solicitors Litigation Association); AIJA (International Association of Young Lawyers); ABA SIL (American Bar Association, Section of International Law)


Malvern Girls College; King’s College, London/Sorbonne, Universite de Paris I (LLB and Maitrise en Droit (1994 2(1)); College of Law, London (1995).


Tennis, skiing, travel.

London: Dispute resolution

Banking litigation: investment and retail

Within: Banking litigation: investment and retail

Stewarts Law LLP¬†is 'an outstanding conflict-free firm that is able to take on banks and other financial institutions, which it regularly does¬†‚Äď and wins'. The largest litigation-only law firm in the UK is traditionally known for claimant matters, but it is increasingly being instructed for defence work. The practice also benefits from the firm's¬†civil fraud practice, which is often involved in disputes over complex financial instruments and structures. It acted for the liquidators of Kaupthing Bank in relation to a ‚ā¨500m claim against Deutsche Bank, which arose from the sale of complex banking derivatives.¬†Clive Zietman¬†is a go-to lawyer in London for large-scale litigation against banks. Also highly rated are¬†Sean Upson,¬†Keith Thomas,¬†David Hughes,¬†¬†¬†Marc Jones, Fiona Gillett, Paul Brehony¬†and¬†Ian Gatt QC, along with Lucy Ward¬†and Laura Jenkins. Elaina Bailes¬†and Lorraine Lanceley¬†were promoted to the partnership, and senior associate¬†Joe Mitchell¬†and associate¬†Harry Spendlove¬†are also experienced advisers.

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Commercial litigation

Within: Commercial litigation

Stewarts Law LLP's 'lawyers are highly co-ordinated, smart, commercial, proactive and responsive'. The largest litigation-only law firm in the UK, it is almost uniquely conflict-free and one of the few London firms able to accept instructions against major banks and financial institutions. Clive Zietman heads the commercial litigation department, Sean Upson has a highly rated banking litigation practice, Keith Thomas has over 20 years’ experience dealing with the full range of banking disputes, and David Hughes advises governments, sovereign funds and institutional clients on complex fraud and regulatory issues; the other names to note are Marc Jones, Fiona Gillett, Paul Brehony and Lucy Ward. Elaina Bailes and Lorraine Lanceley were made up to the partnership in 2019.

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