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Sponsored firm profile:
Simmons & Simmons

You cannot control the outcome of tax litigation and, in the current political environment, judgments can be hard to predict. We focus on the elements we can control.

Our approach is intellectually rigorous, to ensure all potential technical arguments have been evaluated and managed so there are no surprises at trial. We investigate thoroughly, then focus on meticulous case preparation and strategic planning.

We have a deep understanding of how businesses operate which enables us to think through the wider impact of case presentation and advise our clients on the potential for reputational impact. For many of our listed clients, their tax disputes may require consideration from a market announcement perspective, be sensitive to audit issues or have wider regulatory conduct implications. We have developed strong links with our colleagues across the firm to provide a seamless service to our clients, drawing on our firm’s capabilities in regulatory, white-collar crime, investigations, dispute resolution, arbitration, data protection and competition.

Simmons & Simmons has one of the strongest contentious tax practices in the market, specialising in complex, high-value tax disputes. We are one of very few law firms to have a truly dedicated contentious tax practice, with partners and associates entirely focused on tax litigation and disputes work and the only large law firm genuinely able to blend accountancy, economics and legal expertise on tax dispute issues. We are proud of our reputation for excellence and are committed to getting results for our clients in their most complex matters.

We specialise in commercial litigation concerning tax, e-discovery, combined regulatory investigations involving HMRC or international tax authorities, dawn raids, professional negligence and fraud work.

Our team draws on the expertise of specialist tax lawyers, accountants, economists and tax advisers from across our international offices and is experienced in dealing with both domestic and cross-border issues.

The team brings together experience gained in both leading law firms and the Big Four accountancy firms.

We adopt the right dispute resolution strategy for the matter at hand, whether litigation, ADR, negotiation with tax authorities or collaborative working on computational aspects of disputes.

We act on the full range of civil and criminal tax disputes and contentious issues, providing liability and quantum advice and representing clients in litigation and negotiation with revenue authorities. We also advise on all corporate, indirect, personal and environmental taxes.

Our contentious tax practice combines outstanding technical ability, strategic oversight and commercial understanding. We steer our clients through the resolution and litigation of tax disputes. We work with our specialist tax lawyers and our wider litigation, investigations and competition and regulatory practices to make sure our clients receive the advice they need.

Contact us:

Nick Skerrett

Global Head of Contentious tax
T: +44 20 7825 3975

Specialises in global and domestic litigation of complex tax disputes, investigations and public law.

Darren Oswick

International tax and employment taxes
T: +44 20 7825 3546

Specialises in disputes relating to corporate tax planning, investment banking and employee taxes.

Monique van Herksen

Transfer pricing controversy
T: +31 20 722 2325

Specialises in transfer pricing, dispute resolution and related international tax issues.

Martin Shah

Financial services and UK tax policy
T: +44 20 7825 3975

Specialises in asset management tax disputes, tax strategy and reporting.

Tokomo Ikawa

Transfer pricing controversy
T: +44 20 7825 4030

Specialises in advising on complex transfer pricing and diverted profits tax disputes.


1 Ropemaker Street


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