Joseph Hage Aaronson & Bremen LLP

JHA is a law firm that places clients’ needs at the centre of its operations, with a distinctive structure that integrates solicitors, barristers, and forensic accountants from the outset to deliver efficient and effective case strategies. Combining the qualities of a traditional law firm with those of a chambers, its team works collaboratively to devise strategies tailored to client objectives, whether through litigation, arbitration, mediation, or settlement.

The firm is known for building close client relationships based on trust and a deep understanding of commercial and legal objectives, providing full access to its legal team from the initial meeting and ensuring timely, well-considered advice. JHA is highly sensitive to client confidentiality and does not promote its business based on client successes.

Founded in 2013, JHA has achieved Tier 1 ranking in the Legal 500 UK for Tax Litigation and Investigations and is recognised as the only top-tier firm for Contentious Tax by Chambers UK, a distinction maintained annually since its inception.

JHA’s contentious tax practice unites barristers, solicitors, chartered tax advisors, and accountants to provide a cohesive approach to tax disputes. The firm advises on a wide range of domestic and international tax matters, including corporation tax disputes with HMRC, Group Litigation Orders, transfer pricing enquiries, and investigations into tax fraud or abuse. Its team has acted in some of the highest-profile disputes, including the largest VAT Group Litigation in the Tax Tribunal and significant cases involving Diverted Profits Tax, achieving favourable outcomes and substantial penalty reductions.

In addition, JHA represents entrepreneurs, owner-managed businesses, and high-net-worth individuals in sensitive tax matters, fostering constructive engagement with HMRC to resolve disputes effectively and achieve positive results for clients.

Location: London
Founded: 2013
Rankings: Tier 1, Legal 500 UK; Band 1, Chambers UK (Contentious Tax)