How to approach a private trust for a family with assets in the United Kingdom

A family with assets in the United Kingdom and a principal based in Hong Kong or Asia sits at the intersection of three legal systems at once. The asset location is the United Kingdom. The family's ordinary residence and governance may be Hong Kong. And the holding or trust vehicle may sit in an offshore centre such as the British Virgin Islands or the Cayman Islands. Getting the structure right depends on reading all three systems together – not running them in sequence as if each were independent.

A private trust for a family with assets in the United Kingdom is a formal legal arrangement, governed by a chosen trust law, under which assets are held by a trustee for the benefit of defined beneficiaries. For families spanning Hong Kong and the United Kingdom, the governing instrument is ordinarily the trust deed, supported by a letter of wishes and a suite of ancillary documents. The law of the trust, the residence of the trustee, and the location of the UK assets each carry independent legal consequences – for inheritance tax, forced-heirship exposure, and enforcement of the trust's terms across borders.

This guide follows the decision sequence a principal and their counsel should work through: first the structural choice, then the governing-law question, then the UK-specific considerations, and finally the documentation and ongoing governance steps that keep the structure sound.

What is the decision the family is actually making?

The starting point is not "which trust?" but "what problem is the trust solving?" A family with UK property, a portfolio of UK equities, or a stake in a UK trading company faces a different set of exposures than a family with purely liquid offshore assets. The answer to the structural question depends on the answer to four prior questions.

First, what is the UK inheritance tax position? Inheritance tax (a charge levied by HM Revenue & Customs on the value of a deceased person's estate above a statutory threshold) applies in the United Kingdom on the basis of both domicile and asset location. For non-domiciled (non-dom) individuals – those whose permanent home, in the legal sense, is outside the United Kingdom – historically only UK-situated assets were within the charge. The position for non-doms holding UK assets has been under sustained legislative reform; parties should verify the current position before acting. An adviser working only from the pre-reform position may structure a trust that delivers little of the protection it appears to offer.

Second, what is the succession law that would otherwise govern the UK estate? Immovable property – land and buildings – in the United Kingdom is governed, as a matter of private international law, by UK succession rules for the property itself. The law of the owner's domicile governs movable assets. For a Hong Kong-based principal, that means the Hong Kong position governs the movables while UK law governs the land. A trust can disrupt that default allocation, but only if it is structured before the succession event occurs.

Third, is there a forced-heirship claim from any other jurisdiction in the family? A Mainland Chinese family member, a European national, or a family with connections to a civil-law system may be subject to forced-heirship rules (mandatory rights of certain relatives to a defined share of the estate regardless of the owner's wishes). Hong Kong has no forced-heirship regime of its own. The Trustee Ordinance (Cap. 29), substantially reformed with effect from 1 December 2013, includes statutory protections for Hong Kong-law trusts against foreign forced-heirship claims. Whether those protections apply to a trust holding UK assets depends on governing-law choices made at the outset.

Fourth, what degree of family control is needed? A discretionary trust gives the trustee broad powers. A fixed trust creates entitlements. A reserved-powers structure – under which the settlor retains certain defined powers without invalidating the trust – is now expressly protected under the 2013 reform to the Trustee Ordinance. The family's preferences on control and flexibility shape both the structure and the choice of trust law.

Which law should govern the trust – and where should it be administered?

The governing law of the trust and the jurisdiction of administration are the two levers that determine how the structure performs across the Hong Kong–UK interface. They need not be the same.

A trust governed by Hong Kong law and administered by a Hong Kong-seated trustee carries the protections of the reformed Trustee Ordinance, including the firewall against foreign forced-heirship claims and the explicit validation of reserved-powers structures. Those are material advantages for a family with civil-law exposure or strong preferences for settlor involvement.

A trust governed by BVI or Cayman law and administered offshore is a common alternative. Both jurisdictions operate mature trust statutes with comparable forced-heirship protections and reserved-powers provisions. For further analysis of that structure, see our analysis of private trusts for families with BVI-held assets. The offshore vehicle is frequently used when the family already has an offshore holding company above the UK operating or property assets, and the trust is placed above that holding layer.

What neither a Hong Kong-law trust nor an offshore trust can do is override UK tax law in relation to UK-situated assets. The inheritance tax position, any UK income tax on UK-source income, and UK capital gains on UK property are determined by UK rules applied to the trust's structure – not by the trust's governing law. That is the interface point where cross-border advice is indispensable.

The sequence matters. A trust established before the family member acquires a UK domicile of choice – or before the UK inheritance tax charge attaches under current rules – operates differently from one established after. In our cross-border practice, the single most common error we see is a trust established reactively, after the UK tax or succession event has already crystallised, rather than before the exposure arises.

The sequence matters. A trust established before the family member acquires a UK domicile of choice – or before the UK inheritance tax charge attaches under current rules – operates differently from one established after. In our cross-border practice, the single most common error we see is a trust established reactively, after the UK tax or succession event has already crystallised, rather than before the exposure arises.

The sequence above describes the standard position. Your matter turns on the documents, the jurisdictions actually engaged, and the order of steps – which is where the route is won or lost. For a structured assessment of your family's governing-law and administration options across Hong Kong, the United Kingdom and the relevant offshore centre, write to us at info@lockhartyip.com.

Step one: mapping the UK asset profile before drafting begins

Before any trust document is drafted, the asset map must be complete and accurate. This is not a housekeeping step. It determines which instruments apply, which UK tax elections are available, and whether the proposed structure is legally effective for the assets in question.

UK-situated assets fall into three broad categories for structuring purposes. UK residential property has been subject to targeted legislative change over successive years; the UK rules on how residential property is held through offshore structures have shifted materially. UK commercial property and land has its own inheritance tax and stamp duty land tax treatment. UK equities, bonds and liquid assets are generally more straightforward to hold through a trust, but the income and gains tax treatment depends on the residence and domicile status of the trust and its trustees.

The asset map should record: the legal and beneficial ownership of each asset; the current holding structure, if any; the acquisition date and cost (relevant to UK capital gains); the income generated; and any existing charges or mortgages. This document becomes the working brief for both the UK tax adviser and the trust counsel.

A micro-scenario illustrates the stakes. A Hong Kong-resident principal had acquired a portfolio of UK residential properties through a personal holding structure in the early 2010s. When the family sought to establish a discretionary trust above the portfolio in 2024, the analysis revealed that the holding structure had already attracted UK inheritance tax exposure under rules introduced for offshore-held UK residential property. The trust could not remedy that exposure retrospectively. The work became a remediation exercise rather than a straightforward establishment – more complex, more time-consuming, and with a reduced range of options. Earlier action would have preserved the full range of planning choices.

Step two: selecting the trustee and understanding the trustee's role

The trustee is the legal owner of the trust assets. Choosing the trustee is not an administrative decision. It determines the trust's residence for tax purposes, the enforceability of the trustee's powers, and the practical governance of the structure over its lifetime.

For a trust holding UK assets, the residence of the trustee matters to the UK tax authorities. A trust administered by professional trustees resident in Hong Kong or offshore is generally treated as a non-UK-resident trust for UK income tax and capital gains purposes, provided the settlor is not UK-domiciled and the conditions for non-resident trust treatment are met. Where those conditions are not met, the trust may be pulled within the UK tax charge regardless of where it is governed or administered.

The options are: a professional corporate trustee based in Hong Kong; a professional corporate trustee based offshore (BVI, Cayman, Jersey, or another recognised trust jurisdiction); or a combination of a professional trustee with a protector or advisory committee drawn from family members or independent advisers. The use of a protector (an independent individual or committee with defined reserved powers, typically including the power to remove and replace the trustee) is common in family trust structures where the settlor wants a check on the trustee's discretion without retaining personal control.

Our desk regularly advises on the relationship between the trustee's seat, the governing law of the trust, and the UK tax position – which is a three-way analysis that no single adviser, operating from one jurisdiction alone, can complete.

For families considering the full private wealth context – succession planning, family office governance, and asset protection across multiple jurisdictions – the starting point is our Private Wealth practice overview.

Step three: drafting the core documents and the letter of wishes

The trust deed is the constitutional document. It defines the trust's terms, the powers of the trustee, the class of beneficiaries, and the governing law. For a family with assets in the United Kingdom, the trust deed must be drafted with knowledge of UK tax law as well as the law of the trust's governing jurisdiction. The two interact.

The letter of wishes (a non-binding statement by the settlor to the trustee indicating how the settlor would like the trustee to exercise its discretion) is a separate document. It is not part of the trust deed and should not be incorporated by reference into it. Incorporating the letter of wishes into the deed converts it from guidance into obligation, which can have unintended tax and legal consequences. In our cross-border practice, we see this error made when advisers work from precedents designed for domestic structures and do not adjust for the cross-border fact pattern.

The ancillary documents include: a deed of appointment (used to transfer assets into the trust); trustee resolutions recording the acceptance of assets and the trustee's decision-making; and, where the trust holds UK property, the relevant UK land registry documentation. Each document must be consistent with the others and with the chosen governing law.

Where the trust is to hold UK land, the interaction with UK stamp duty land tax (a transaction tax on the acquisition of UK land above certain thresholds) and UK land registration requirements must be addressed. Transfers of UK land into a trust are a transaction for stamp duty land tax purposes; the liability depends on the consideration given and the structure of the transaction. Verify the current rates and thresholds with UK counsel before completing any such transfer.

If an earlier filing, structure or enforcement attempt produced an adverse or stalled result, a second read can identify the strategic error and the routes still open. Write to info@lockhartyip.com to discuss a review of an existing structure.

What does the route look like when a forced-heirship claim is in the picture?

Forced-heirship exposure is the risk most often underestimated by families with multi-jurisdictional profiles. For a Hong Kong-based family with UK assets and a member who holds nationality or residence in a civil-law jurisdiction – the Mainland, a European country, or a Middle Eastern state – the question is: can a foreign forced-heirship claim override the trust?

The answer depends on the law governing the trust and the conflict-of-laws rules applied by the courts of the relevant jurisdiction. For a trust governed by Hong Kong law, the Trustee Ordinance contains a statutory firewall: the validity, interpretation and effect of a Hong Kong-law trust are not to be affected by any rule of foreign law that would impose forced-heirship or other mandatory succession rights. That firewall is strong but not absolute. It operates as a matter of Hong Kong law; it does not bind the courts of the jurisdiction seeking to impose the forced-heirship claim.

For UK-situated immovable assets – land and buildings – the position is more nuanced. A UK court applying private international law would generally apply UK succession rules to UK land, regardless of the terms of a foreign trust. The trust's effectiveness as a succession-planning vehicle depends on the trust having been properly constituted under UK law as well as the governing trust law. This is one of the areas where the Hong Kong–UK cross-border interface requires both systems to be addressed simultaneously, not sequentially.

For a detailed treatment of forced-heirship risk and how the trust structure interacts with it, see our analysis of forced heirship and cross-border succession risk.

A second micro-scenario. A European national, ordinarily resident in Hong Kong, held UK commercial property through a personal structure and was considering a trust to protect the asset for her children under Hong Kong law. The family's European jurisdiction had a mandatory réserve héréditaire (the civil-law forced-heirship entitlement protecting children's inheritance rights). The trust structure was established under Hong Kong law, with a protector seated outside both the United Kingdom and the European jurisdiction. The governing-law analysis covered the Hong Kong firewall provision, the UK land succession position, and the conflict-of-laws rules of the European jurisdiction. The outcome was a structure that the family's advisers in all three jurisdictions could work with – not one that assumed the problem away.

Step four: ongoing governance, review, and the triggers that require a revisit

A trust is not a static document. It requires active governance over its lifetime. The trustee must exercise its discretion in accordance with the trust deed and in the interests of the beneficiaries. That obligation does not diminish once the trust is established.

For a trust holding UK assets, the ongoing governance requirements include: annual accounting and tax filings in the United Kingdom (the trust's UK income and gains are reportable to HM Revenue & Customs); periodic review of the UK tax position as legislation changes; and trustee resolutions recording the exercise of discretionary powers.

The triggers that require a structural review are predictable. A change in the settlor's domicile or residence. A change in the residence of the trustee. A change in the family's composition – births, deaths, marriages, or disputes. A material change in the UK legislative position on inheritance tax, non-dom status, or offshore structures. Any acquisition or disposal of UK assets. Each of these events can alter the tax and legal position of the trust, sometimes materially.

What does a structured review look like? The starting point is the current asset map, the trust deed, and the family's current residence and domicile profile. From there, the review identifies any mismatch between the trust's existing terms and the current legal position, and proposes adjustments – whether by variation of the trust deed, substitution of the trustee, or reorganisation of the holding layer. In our cross-border practice, a structured review at regular intervals, or immediately after a triggering event, is the single most effective governance step a family can take.

Decision checklist: before you instruct

The following questions are the ones a family and their counsel should be able to answer before any trust instrument is drafted. They are not a substitute for legal advice; they are a filter that identifies the gaps the advice needs to fill.

• What are the UK assets – by category (land, equities, business interests), by current holding structure, and by UK tax exposure?
• What is the settlor's current domicile – in the technical legal sense – and how does the relevant jurisdiction define it?
• Is any family member subject to forced-heirship rules from a civil-law jurisdiction, and if so, which jurisdiction and which assets are in scope?
• What law should govern the trust, and why – Hong Kong, BVI, Cayman, or another recognised trust jurisdiction?
• Where will the trustee be resident, and has the UK tax consequence of that choice been verified with UK counsel?
• Is a protector or advisory committee appropriate, and if so, who – and where resident – should fill that role?
• Are the proposed beneficiaries defined with sufficient certainty under both the governing trust law and, where relevant, UK law?
• Is there any existing holding structure above or below the UK assets that must be addressed before or alongside the trust?
• What are the ongoing UK reporting obligations, and who is responsible for them?
• When was the last structural review, and what triggered it?

If any of these questions does not have a clear answer, that gap should be addressed before drafting begins – not resolved by assumption in the trust deed.

Related practices

• Private Wealth – succession, trusts, asset protection and family office structuring across borders
• Holding Structures – offshore and Hong Kong holding vehicles above UK and Greater China operating assets

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• Private Wealth
• Private Trust Family Assets Bvi Bvi Analysis
• Forced Heirship Cross Border Succession Risk

This publication is general information and does not constitute legal advice. For advice on your situation, contact info@lockhartyip.com.