Why Mayfair's Leading Law Firms Trust Specialist Tax Counsel

London's West End — encompassing Mayfair, St James's, and the surrounding areas — houses the highest concentration of private client legal practices, wealth management firms, and family offices in Europe. The clients served by these firms are typically high-net-worth or ultra-high-net-worth individuals with multi-jurisdictional connections, complex asset structures, and a need for advice that spans UK domestic tax law, international treaty networks, and offshore structuring. For solicitor firms handling private client work from Mayfair and the surrounding postcodes, the tax dimension of any significant matter is rarely straightforward. A seemingly routine will or family trust may engage inheritance tax provisions under the Inheritance Tax Act 1984 as amended by Finance Act 2025, the remittance basis rules for non-domiciled individuals, and potentially the new deemed domicile provisions that have transformed the landscape for long-term UK residents. Private wealth managers operating from the West End face similar complexity. Investment decisions that appear commercially sound may carry unforeseen UK tax consequences — from the anti-avoidance provisions in Part 13 of the Income Tax Act 2007 (the transfer of assets abroad code) to the attribution rules for closely held offshore companies under section 3 of the Taxation of Chargeable Gains Act 1992. The cost of getting these issues wrong is measured not just in additional tax but in reputational damage and regulatory risk for the advising firm.

The tax affairs of high-net-worth individuals are qualitatively different from those of ordinary taxpayers, and the advice they require demands a depth of specialist knowledge that general practice solicitors and accountants — however capable — are not always positioned to provide. This is not a criticism of those professionals; it is a recognition that UK tax law has grown so voluminous and so technical that genuine expertise requires years of dedicated focus. Consider the position of a non-domiciled individual who has been UK-resident for fourteen of the past twenty tax years. Under the extended deemed domicile rules introduced by section 835BA of the Income Tax Act 2007 (as amended), that individual is now deemed domiciled in the UK for income tax, capital gains tax, and inheritance tax purposes. The remittance basis is no longer available. Worldwide income and gains are within the UK charge. The individual's offshore trusts, previously sheltered, now potentially give rise to UK tax liabilities under the settlements legislation and the benefits charge in sections 731–735 of the Income Tax Act 2007. A private client solicitor drafting a new will for this individual must understand how the deemed domicile rules interact with the excluded property trust protections, the circumstances in which those protections are lost (for example, where new property is added to a trust after the individual becomes deemed domiciled), and the interplay with any applicable double taxation treaty. An accountancy practice preparing the individual's self-assessment return must grapple with the matching rules for offshore income gains, the complexities of rebasing elections, and HMRC's increasingly assertive approach to the taxation of benefits received from offshore structures. These are not issues that can be resolved by consulting a textbook or a brief online search. They require the kind of deep, constantly updated expertise that a specialist tax barrister brings to the table — someone who has spent decades working at the intersection of statute, case law, and HMRC practice.

Inheritance tax remains one of the most significant concerns for West End private client practices. The nil-rate band has been frozen at GBP 325,000 since 2009, and with property values in central London routinely exceeding several million pounds, even relatively modest estates can face substantial IHT exposure. For the ultra-wealthy clients typically advised by Mayfair firms, the sums at stake are transformative. Effective IHT planning requires navigating a statutory framework that is riddled with anti-avoidance provisions, HMRC guidance that does not always reflect the statutory position, and case law that continues to develop. The gift with reservation of benefit rules in Finance Act 1986, the pre-owned assets charge in Finance Act 2004, and the general anti-abuse rule (GAAR) introduced by Finance Act 2013 each impose constraints on planning opportunities that were once considered routine. A specialist tax barrister can add particular value in this area by providing authoritative opinions on the boundaries of permissible planning — opinions that carry weight with HMRC because they come from an independent member of the Bar with a duty to the court. When a wealth manager or solicitor is advising a client on a significant lifetime gift, the creation of a family investment company, or the use of business property relief in relation to a trading group, a barrister's opinion provides a level of assurance that cannot readily be replicated by other forms of advice. Daniel Feingold regularly advises West End solicitor firms and private wealth managers on IHT planning for UK-domiciled and non-domiciled clients, including the use of excluded property trusts, the availability of agricultural and business property reliefs, and the structuring of lifetime gifts to minimise exposure to the seven-year cumulation rules.

The changes introduced by Finance Act 2025 represent the most significant reform of the UK's treatment of non-domiciled individuals in a generation. The abolition of the remittance basis for income tax and capital gains tax purposes, the introduction of a new temporary repatriation facility, and the restructuring of the inheritance tax rules for non-UK assets have fundamentally altered the planning landscape. For private client solicitors and wealth managers in the West End, these changes have immediate practical consequences. Clients who previously relied on the remittance basis to shelter overseas income and gains now need to reconsider their entire tax position. Trust structures that were established on the assumption that the remittance basis would continue indefinitely may need to be unwound or restructured. Decisions about whether to take advantage of the temporary repatriation facility — and the complex computational rules that apply — require careful analysis of each client's particular circumstances. Accountancy practices preparing returns for non-dom clients face an unprecedented compliance burden. The transitional provisions are intricate, the interaction with existing double taxation treaties is uncertain in several respects, and HMRC's guidance has been slow to address the practical difficulties that arise. Trust companies administering offshore structures for UK-connected individuals need to understand how the new rules affect the tax treatment of distributions, loans, and benefits provided to settlors and beneficiaries. This is precisely the kind of environment in which specialist tax counsel provides the greatest value. Daniel Feingold has been advising on non-dom taxation throughout his thirty-year career at the Bar and has a deep understanding of the historical development of these rules, the policy objectives underlying the 2025 reforms, and the practical implications for clients and their professional advisers.

HMRC's approach to high-net-worth taxpayers has become markedly more assertive in recent years. The Wealthy & Mid-Sized Business Compliance directorate now manages a dedicated portfolio of the UK's wealthiest individuals, and HMRC has invested heavily in data analytics, information exchange under the Common Reporting Standard (CRS) and Automatic Exchange of Information (AEOI) frameworks, and specialist investigation teams focused on offshore structures and trust arrangements. For professional firms advising wealthy clients — whether solicitor practices, accountancy firms, wealth managers, or trust companies — this heightened scrutiny creates both risk and opportunity. The risk is that advice given in good faith may be challenged by HMRC, potentially leading to disputes that are costly, time-consuming, and damaging to client relationships. The opportunity is that firms which can demonstrate access to authoritative, independent tax counsel are better positioned to win and retain clients who value certainty and robustness in their tax affairs. A barrister's opinion carries particular weight in the context of HMRC disputes because of the barrister's independence, their duty to the court, and their expertise in the interpretation of tax legislation. When HMRC opens an enquiry into a client's affairs, the existence of a prior barrister's opinion — setting out the legal analysis supporting the position taken — can materially influence the course of the dispute. It demonstrates that the position was adopted on the basis of considered legal advice, not mere hope or aggressive interpretation.

There are several common scenarios in which West End private client firms should consider instructing specialist tax counsel. The first is when a client is contemplating a significant transaction — such as a disposal of business assets, a restructuring of family wealth, or a relocation to or from the UK — and the tax consequences are material and uncertain. In these cases, a barrister's opinion provides the client with a clear understanding of the risks and the legal basis for any planning adopted. The second scenario is when HMRC has opened, or is likely to open, an enquiry into a client's tax affairs. Early involvement of specialist counsel can help frame the response to HMRC's enquiries, identify the strengths and weaknesses of the client's position, and develop a strategy for resolving the dispute — whether through negotiation, alternative dispute resolution, or litigation before the Tax Tribunal. A third scenario arises in connection with trust administration. Trust companies and solicitors acting as trustees often face difficult questions about the tax treatment of distributions, the application of anti-avoidance rules, and the reporting obligations that apply under the Trust Registration Service and the CRS. A specialist tax barrister can provide clarity on these issues and help trustees discharge their obligations while protecting the interests of beneficiaries. Finally, wealth managers and family offices frequently benefit from specialist tax input when designing investment strategies, structuring fund holdings, or advising on philanthropic giving. The tax treatment of different asset classes, the availability of reliefs such as the Enterprise Investment Scheme (EIS) and Seed Enterprise Investment Scheme (SEIS), and the implications of holding investments through corporate or trust structures all require careful analysis.

Daniel Feingold has advised West End solicitor firms, accountancy practices, private wealth managers, and trust companies throughout his career. From his practice at Burnell Chambers in Middle Temple — a short distance from the West End — he provides the kind of responsive, commercially aware tax advice that professional firms and their clients require. His areas of particular relevance to West End private client practices include inheritance tax planning and opinion work, non-dom and residence planning under the Statutory Residence Test and Finance Act 2025 reforms, the taxation of offshore trusts and structures, capital gains tax planning on business and investment disposals, and HMRC dispute resolution and Tax Tribunal representation. Daniel accepts instructions from solicitors, accountants, and other regulated professionals, as well as directly from lay clients under the Bar's Direct Access rules where appropriate. Conferences can be arranged at Burnell Chambers, 1A Middle Temple Lane, London EC4Y 9AA, or by video call. To discuss how Daniel can assist with a client matter, contact the clerks at Burnell Chambers on 020 3576 1203 or at clerks@burnellchambers.co.uk.