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Stewarts Law LLP

Work 020 7822 8000
Fax 020 7822 8037
Leeds, London

Keith Thomas

Work 020 7822 8177
Stewarts Law LLP

Work Department

Securities Litigation 


Head of the Securities Litigation department. 

Keith focuses on complex and high-value commercial litigation with a particular emphasis on financial and banking disputes. Keith has recently led the high profile RBS Rights Issue Litigation to a successful conclusion on behalf of 313 major financial institutions.

Keith’s expertise is in banking and financial litigation, securities litigation, multi-jurisdictional and international disputes, fraud and asset recovery, private client and trust disputes.

Cases on which Keith has acted include the RBS Rights Issue Litigation where he advised 313 financial institutions on recovering their losses arising from RBS’s £12bn rights issue, the recovery from London institutions of monies for a US receiver of a collapsed hedge fund and a number of high profile Russian disputes being tried in London.


Trained McKenna & Co (CMS Cameron McKenna); qualified 1996. Systems integration manager British Telecom 1989-91; McKenna & Co 1996-99; associate Llewelyn Zietman (later Arnander Irvine & Zietman) 2000-03; associate Shook, Hardy & Bacon 2003-04; associate Manches LLP 2004-05; partner 2006-10; partner Stewarts Law LLP 2010 to date. Co-author of the UK chapter of International Corporate Law (Aspatore Books).


Keith is a member of the International Bar Association and the London Solicitors Litigation Association.


Merchant Taylors School, Northwood; University of York (1988 MEng Electronic Systems Engineering); College of Law, York (1992 CPE; 1993 LSF).


Skiing and sailing when his children allow him the time.

London: Dispute resolution

Banking litigation: investment and retail

Within: Banking litigation: investment and retail

'A top firm for claimants and highly recommended for banking litigation', the 'smart and user-friendly' conflict-free firm¬†Stewarts Law LLP¬†is the largest litigation-only law firm in the UK and acts for some of the world‚Äôs biggest financial institutions, companies, multinational corporations and high-net-worth individuals; the team has also expanded into new areas of disputes work, such as securities litigation. The practice acts in complex, large-scale and high-value banking disputes and has significant experience of litigation funding; and the civil fraud group's work often involves complex financial instruments and structures. In a high-value, complex matter involving multiple jurisdictions, it acted for the liquidators of Kaupthing in connection with a ‚ā¨500m claim against Deutsche Bank, which arose from the sale of complex banking derivatives; and in¬†a dispute that raised fundamental questions about the duties of banks that issue Islamic corporate bonds, the team acted for both hedge funds that bought a bond and the company that issued the bond. ¬†Clive Zietman¬†is department head,¬† Marc Jones¬†'runs litigation very well', and Fiona Gillett¬†is 'a¬†very able lawyer, who has a great touch with clients'. Other key advisers are¬†¬†Sean Upson,¬†Keith Thomas,¬†Paul Brehony,¬†Ian Gatt QC¬†and¬†David Hughes¬†. Lucy Ward¬†and Laura Jenkins¬†were promoted to the partnership.¬†Elaina Bailes¬†is a key senior associate.

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Commercial litigation

Within: Commercial litigation

Stewarts Law LLP is the largest litigation-only law firm in the UK and one of the few firms able to accept instructions against banks and financial institutions as well as other major corporates. It 'provides an excellent service with able lawyers, who are ready to drop everything and get up to speed at short notice when necessary'. The practice acted for 112 institutional investors, as claimants, in seeking damages further to Tesco's admission that its earlier financial statements were overstated by at least £326m as a result of manipulation of its commercial income; the case is one of the first cases to be brought under new legislation that is designed to address serious corporate mis-statements in published statements.Clive Zietman heads the commercial litigation department and the 'ultra-responsive' Ian Gatt QC 'has a good understanding of clients' priorities'. Other highly rated advisers include Marc Jones, Fiona Gillett, Keith Thomas, Sean Upson, Paul Brehony and Andrew Hill. David Hughes was recruited from Dechert LLP, while Fiona Stewart left the firm.

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