A private trust for a family with assets UK

For a family with capital invested or held in the United Kingdom, the decision to settle a private trust is rarely about the UK in isolation. It is about what happens when residence shifts, when a generation transfers, when a foreign forced-heirship rule reaches across and collides with the UK property regime. The question our desk hears most often is not "can we do this?" but "which law governs, and does that answer hold in every jurisdiction where the family has meaningful exposure?"

A private trust structured through Hong Kong for a family with assets in the United Kingdom draws on the Trustee Ordinance (Cap. 29) – which, since its reform effective 1 December 2013, abolished the rule against perpetuities and strengthened the firewall against foreign forced-heirship claims – paired with the governing framework for UK-situated property under English law, producing a structure that can hold, manage and transfer those assets across generations without triggering the vulnerabilities that an ad hoc arrangement leaves open.

This note sets out when the structure is needed, how we run the engagement, the cross-border interface between Hong Kong and the United Kingdom, the decisions the family must own, and the next step for a family ready to move.

When does the trigger arrive, and what does it look like?

Most families do not arrive at a trust conversation in the abstract. Something has changed. A principal approaches UK residence or domicile – and with it, a potential charge to UK inheritance tax on worldwide assets. A cross-border marriage introduces a foreign forced-heirship regime that, absent a firewall, would reach into the UK estate. A family member based in Hong Kong holds a beneficial interest in a UK property structure, and the question of what happens on incapacity or death has never been formally resolved.

In our private-wealth practice, we regularly see three precipitating events. First: a residency or domicile analysis that reveals the UK's long-reach inheritance-tax position for deemed-domiciled individuals. Second: an inbound investment cycle – UK real estate, a UK operating company, a UK portfolio – that has grown large enough that informal ownership is no longer appropriate. Third: a succession event, either anticipated or already in motion, where the family discovers that the assets have no consolidated holding structure and each jurisdiction will administer them separately.

The engagement risk at this stage is sequence. Acting after the principal acquires UK deemed domicile, or after a disposition has been made that the UK treats as a transfer of value, closes routes that are straightforward when the planning is done ahead of time. That is the enforcement risk that drives most mandates to our desk.

What is the governing structure, and which instruments apply?

A private trust for this purpose typically involves a Hong Kong-law trust deed, governed by the Trustee Ordinance, with a professional trustee or a private-trust company as trustee, and a letter of wishes guiding the trustee's discretion in favour of the family beneficiaries.

The Trustee Ordinance, as reformed effective 1 December 2013, contains three features that are directly relevant to a family with UK exposure. First: the abolition of the rule against perpetuities and the rule against excessive accumulations for Hong Kong trusts means the structure can hold across a long generational horizon without a forced distribution date. Second: the statutory protection for settlor reserved powers means that a principal who retains an investment advisory role or a power of revocation does not automatically invalidate the trust. Third: and most important for a family with assets in a civil-law country of origin, the 2013 reform strengthened the trust's protection against foreign forced-heirship claims, providing a statutory firewall under Hong Kong law.

Hong Kong law has no forced-heirship regime of its own. That absence is a deliberate policy choice, and it interacts cleanly with the English law position, which also does not impose a civil-law style reserve. Where the family includes members from a jurisdiction that does impose forced heirship, the firewall provision carries material weight.

For the UK-situated assets themselves, the English law of trusts – the Trustee Act 1925 and the Trustee Act 2000 as the principal statutes – governs the administration and investment of those assets to the extent they are held through a UK sub-structure or directly registered in the UK. The interface between the Hong Kong trust deed and the English law position on UK property is a discrete legal question that requires analysis on each family's facts.

How does the cross-border interface between Hong Kong and the United Kingdom actually work?

Hong Kong and the United Kingdom share a common-law inheritance. That convergence simplifies some questions and creates false comfort on others. The legal concepts – trustee, beneficiary, letter of wishes, power of appointment – are familiar in both systems, but the tax treatment, the recognition of the trust's effect on beneficial ownership, and the interaction with each jurisdiction's succession regime differ in ways that matter greatly for a family holding significant assets in both places.

The critical interface points are four. First: the UK's inheritance-tax analysis of a Hong Kong-law trust settled by a UK-connected principal depends on the settlor's domicile position at settlement and at death. A Hong Kong trust settled before the principal acquires UK deemed domicile is treated differently from one settled after. The sequence of settlement relative to the domicile analysis is often the single most consequential decision in the engagement.

Second: the UK's rules on offshore trusts and income tax, capital gains tax and the remittance basis interact with the Hong Kong trust's distribution provisions. This is English tax law territory. We coordinate on this question with locally licensed English-law tax counsel, because the analysis requires English-law advice. Our role is to ensure the Hong Kong trust instrument is drafted so as not to create unintended UK tax exposures in its own right.

Third: the UK Trusts Register – the register of express trusts operated by His Majesty's Revenue and Customs – requires registration of trusts with a UK tax consequence or with certain UK assets. A professionally run trust structure will need to engage with this obligation; it is not a Hong Kong law question, but it is a structural reality that affects how the trust is administered from day one.

Fourth: if the family also has assets in Mainland China or Hong Kong's Greater Bay Area, the trust structure must be read across that map as well. The Mainland's succession and property rules do not recognise foreign trust structures automatically, and the sequencing of asset transfers into the trust must reflect that constraint. For families in this position, we look at the full asset map before settling a structure that is optimised only for the UK leg.

See also our guide on private trusts for families with assets in the Cayman Islands for the comparison where an offshore holding layer is involved, and our matter note on private trust structuring for families with Mainland China assets for the Greater Bay Area dimension.

The sequence above describes the standard position. Your matter turns on the specific domicile facts, the UK property categories engaged, and the order in which settlement and transfer steps are taken – which is where the route is won or lost.

For a structured assessment of your family's position across Hong Kong and the United Kingdom, write to us at info@lockhartyip.com.

How does the engagement actually run, step by step?

The engagement follows a defined sequence. Understanding it ahead of time allows the family and its principals to prepare the right information at each stage.

The first step is the asset and family map. We prepare a structured questionnaire covering the family's assets by jurisdiction and entity, the residency and domicile position of each principal and beneficiary, the relevant succession law in each jurisdiction, and any existing arrangements – existing wills, prior trusts, shareholder agreements – that interact with the proposed structure. This map is the foundation for every subsequent decision.

The second step is the domicile and succession analysis. We work through the UK domicile position of the settlor and assess the implications for the trust's treatment under UK inheritance tax. This step requires co-ordination with English-law counsel. We identify the appropriate locally licensed English-law advisers and manage the co-ordination, but the English-law analysis is delivered by counsel admitted and practising in England.

The third step is the structural design. On the basis of the asset map and the domicile analysis, we identify the governing law for the trust deed, the trustee structure, the appropriate reserved powers, and the distribution provisions. For a family with a mixed asset base – UK property, Hong Kong shares, other offshore assets – we model how each category is held within or alongside the trust.

The fourth step is document preparation. We draft the trust deed, the letter of wishes, any accompanying protector instrument, and the relevant transfer documents for the assets moving into the trust. Where UK-registered assets are being transferred, we co-ordinate with locally licensed English-law conveyancing or corporate counsel to execute those transfers in compliance with English law.

The fifth step is implementation and registration. The trust is settled, assets are transferred, and any required registrations – including any UK Trusts Register obligations and any Companies Registry notifications in Hong Kong – are completed. We confirm the completion steps with the trustee and prepare a concise implementation record for the family's file.

A mid-market engagement of this kind, involving a modest number of UK and Hong Kong assets and a clear domicile analysis, typically moves from initial mandate to completed settlement within two to four months. More complex structures, or those involving a contested domicile position, take longer. We give the family a realistic timeline at the outset, not at the end.

What are the documents and decisions the family must own?

A private trust is not a passive instrument. The family's active participation in several decisions determines whether the structure performs as intended across its lifetime. We set these out plainly at the start of every engagement.

The settlor must decide, with advice, on the governing law for the trust. That choice – Hong Kong law, English law, or another common-law jurisdiction – carries tax, succession and administrative consequences. For most families with Hong Kong connections and UK assets, Hong Kong law offers the most flexible and well-developed trust environment; but the choice must be made on the specific facts, not by default.

The family must decide on the trustee. A professional corporate trustee regulated in Hong Kong or a recognised offshore jurisdiction provides independence, continuity and regulatory accountability. A private-trust company, established by the family, offers greater family control but introduces governance and substance requirements. The choice interacts with the UK's tax analysis of control and settlor-interest provisions, so it is not purely a preference question.

The settlor must draft a letter of wishes. This is not a binding document, but it is the primary instrument through which the settlor communicates distribution intentions to the trustee. A poorly drafted or outdated letter of wishes is one of the most common sources of family difficulty in trust administration. We spend time on this document in every engagement, because the trustee's discretion is only as informed as the guidance it receives.

The family must also decide on the protector, if one is to be appointed. A protector – a third party with specific consent or veto powers over trustee decisions – can provide an additional layer of family oversight without compromising the trust's validity. The protector's powers must be defined in the trust deed with precision; broad or undefined protector powers create ambiguity and, in some circumstances, tax risk in the UK.

Finally, the family must maintain the trust through its lifetime. This means updating the letter of wishes as family circumstances change, ensuring the trustee is informed of significant changes in the family's asset profile or residency position, and engaging counsel whenever a major transaction – a sale of UK property, a change in beneficiary status, a change in the settlor's domicile – requires the trust's position to be reconsidered.

What do foreign principals most often get wrong?

Three recurring errors appear in our practice, and they are worth naming directly because each one is avoidable with early advice.

The first is treating the trust deed as a one-time exercise. Families settle a trust in one tax or residency environment and then do not update the structure or the letter of wishes as the family's circumstances change. A trust designed for a principal who was not UK-domiciled may perform very differently after that principal acquires UK deemed domicile or moves to the UK on a long-term basis. The structure must be reviewed at every material change of circumstance.

The second is failing to co-ordinate the UK and Hong Kong advice. Each side of the table has a partial view. English-law counsel see the UK tax and succession position; Hong Kong counsel see the trust instrument and its governing law. Without a co-ordinated review, each side can give technically correct advice that produces an incorrect combined result. A European family came to us after settling a Hong Kong trust on English-law counsel's recommendation. The trust deed had been drafted without reference to the Trustee Ordinance's reserved-powers provisions, creating a position that required remediation before the structure could operate as intended.

The third error is the late start. Principals who begin the trust planning after a change in domicile status, after an inbound investment is completed, or after a family member's death has triggered a succession question face a materially narrower set of options. The most effective planning happens before the trigger event, not in response to it.

Decision matrix: which route fits which situation?

Every family's position is different, but the key variables tend to cluster around a small number of patterns. Reading across these patterns gives a practical map for where a private trust fits and where other instruments complement it.

A family with a non-UK-domiciled principal, significant UK real estate, and beneficiaries distributed across Asia and Europe is the clearest case for a Hong Kong-law trust settled before any UK deemed-domicile trigger. The structure captures the UK property, provides a succession vehicle across multiple jurisdictions, and uses the Trustee Ordinance's firewall against any forced-heirship claims from a civil-law country of origin. The risk is timing: the window closes when deemed domicile is acquired.

A family where the principal is already UK-domiciled or deemed-domiciled faces a different analysis. The trust can still perform estate-management and succession functions, but its UK inheritance-tax efficiency is constrained. The structure in this scenario is more likely to focus on generational management – holding the UK assets across beneficiaries, managing distributions, and co-ordinating with a UK will and lasting powers of attorney – than on inheritance-tax mitigation, which requires English-law advice on the options that remain open.

A family with a mixed asset base that includes Hong Kong-listed shares, Mainland operating-company interests, and UK property needs a structure that addresses all three. A single trust deed with a Hong Kong professional trustee, supported by jurisdiction-specific sub-structures where required, is typically the most practical approach. The alternative – separate arrangements in each jurisdiction – creates gaps in co-ordination and multiplies succession risk. We have acted in engagements where a family discovered, on the death of a principal, that three separate advisers in three jurisdictions had prepared instruments that contradicted each other on the question of which asset went to which beneficiary.

If an earlier structure, filing or planning approach has produced an adverse or uncertain result, a second read can identify where the gap arose and which routes remain open.

For a structured assessment of your family's position and the trust route that fits it, contact info@lockhartyip.com.

Checklist: is the family ready to proceed?

The following questions help a principal assess where the engagement stands before the first substantive meeting with our desk.

Has the family prepared a complete asset map by jurisdiction, including all beneficial interests in UK property, Hong Kong companies, offshore entities and other assets?
Has the domicile position of each principal been reviewed by English-law counsel within the past two years?
Are there existing wills, trust deeds, shareholder agreements or matrimonial agreements that interact with the proposed trust, and are they current?
Have the beneficiaries been identified and their own residency or tax positions considered?
Has the family decided on the trustee model – professional corporate trustee, private-trust company, or a combination?
Are there any anticipated changes in the family's residency, asset base or family composition within the next two years that should be factored into the structure now?
Has the family considered the ongoing administration obligations – Trusts Register, annual trustee reviews, letter of wishes updates – and built those into the relationship with the trustee?

A positive answer across these questions means the engagement can move quickly. Gaps in any of them identify the preliminary work to be done before settlement.

Related practices

Private Wealth – succession, trust and asset-protection structuring across greater China and principal offshore centres
Holding Structures – cross-border holding entity design above Hong Kong and offshore operating assets

Frequently asked questions

What does the route look like for a private trust for a family with assets in the United Kingdom?

The route runs from an asset and family map, through a domicile and succession analysis co-ordinated with English-law counsel, to the design and drafting of a Hong Kong-law trust deed, a letter of wishes and any protector instrument, followed by the transfer of assets and any required registrations. Where UK-registered assets are involved, English-law conveyancing or corporate counsel handle the transfer steps. The sequence typically completes within two to four months for a mid-complexity mandate, though a contested domicile position or a complex asset base extends that timeline.

How long does a private trust for a family with assets in the United Kingdom usually take?

A clear mandate with a defined asset base and a resolved domicile analysis typically completes in two to four months from first instruction to settled trust. The variables that extend the timeline are a contested or uncertain domicile position, UK property transfers requiring conveyancing, co-ordination delays with English-law counsel, and any requirement to restructure existing entities before they can be transferred into the trust. We give a realistic timeline at the outset of each engagement based on those specific variables.

Which jurisdiction's law applies to a private trust for a family with assets in the United Kingdom?

The governing law of the trust deed – most commonly Hong Kong law for families with a Hong Kong connection – determines how the trust is administered and interpreted. UK-situated assets, particularly real property and UK-registered companies, are subject to English law in respect of their transfer and registration. The UK inheritance-tax analysis applies according to English tax law, which requires English-law advice. The interaction between the governing law of the trust and the English law applicable to the assets is a specific cross-border question that our desk analyses as a discrete step in every engagement of this kind.

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

A private trust for a family with assets in the United Kingdom