Cator & Ors v Thynn & Anor -[2026] EWHC 209 (Ch)- (06 February 2026)

BAILII

Automated Summary

Key Facts

The case involves three family trusts (Longleat House and Chattels Settlement, Lord Bath's Own Longleat Settlement, and Lord Bath's Longleat Settlement (Ceawlin's Fund)) where trustees seek court approval to exercise a power of advancement for the benefit of the Eighth Marquess of Bath (Ceawlin Henry Lazlo Thynn). The primary issue is whether the Marquess's second son, Henry (born via a surrogate in America), qualifies as a legitimate beneficiary under the trusts' pre-1970 common law definitions of family relationships. The claimants (trustees) propose to confer a power to add Henry and his issue to the beneficiary class, but this may prejudice existing beneficiaries. The court is considering joining a representative defendant to argue against the trustees' decision, following the Denaxe Ltd v Cooper [2024] Ch 65 ruling that requires at least one defendant for issue estoppel to apply.

Issues

  • The court addressed the procedural requirement to join a representative defendant in applications for court approval of trustees' decisions, particularly after the Denaxe Ltd v Cooper [2024] Ch 65 decision. The claimants proposed appointing Caroline Miller, an independent solicitor, to represent beneficiaries who might be prejudiced by the trustees' decision to add Henry as a beneficiary. This aligns with CPR 19.9 rules and case law (e.g., Sovereign Trustees v Glover [2007] EWHC 1750 (Ch)) allowing non-member representatives when necessary to protect class interests.
  • The court considered whether Henry, born via an American surrogate mother to the Eighth Marquess of Bath, falls within the class of beneficiaries under the Longleat House and Chattels Settlement and Lord Bath's settlements. These trusts retain pre-1970 common law definitions of 'child' requiring legitimacy through all ancestral lines. The claimants seek to add Henry and his issue to the beneficiary class through a power of advancement, but this requires resolving the legal question of whether his surrogacy birth under modern circumstances satisfies the trust's strict legitimacy requirements.

Holdings

  • The court emphasized that post-Denaxe Ltd v Cooper [2024] Ch 65, it is necessary to have at least one defendant in applications for court approval of trustees' decisions to ensure issue estoppel applies. This departure from previous practice requires a party to contest the decision, thereby protecting the court's approval from future relitigation by non-parties.
  • The court ordered the appointment of an independent solicitor, Caroline Jane Miller, as a representative defendant to argue against the implementation of the trustees' decision, ensuring the interests of potentially prejudiced beneficiaries are protected. This followed the claimants' argument that no suitable adult beneficiary could adequately represent the class, and the judge was satisfied that Ms. Miller was qualified and independent.

Remedies

  • The court approved the claimants' (trustees) decision to exercise the power of advancement for the benefit of the first defendant (Ceawlin Henry Lazlo Thynn, Marquess of Bath) to allow him to add his son Henry and Henry's issue to the class of beneficiaries in the Longleat House and Chattels Settlement. This was done to avoid US tax complications and ensure Henry's inclusion despite his birth through surrogacy.
  • The court granted a representation order under CPR 19.9 to join Caroline Jane Miller as the second defendant, ensuring the interests of all beneficiaries potentially affected by the trustees' decision to exercise the power of advancement were represented. This followed the claimants' application to secure a representative to challenge the decision on behalf of the class of beneficiaries.

Legal Principles

  • The Court of Appeal in Denaxe emphasized that estoppel principles (including issue estoppel and abuse of process) form the basis for trustees' immunity from subsequent claims. This requires that the court's approval decision resolves a contested issue with all relevant parties involved, preventing re-litigation.
  • Trustees are protected from liability when acting on court directions if they make full and frank disclosure. This principle is rooted in the statutory framework (e.g., section 30 of the 1859 Act) and case law such as Re Londonderry's Settlement [1965] and Ashburner's Equity (1933), which emphasize that court-approved decisions shield trustees from beneficiary claims.
  • The Denaxe Ltd v Cooper [2024] decision clarified that court approval of a 'momentous' decision by trustees now relies on res judicata (issue estoppel) rather than automatic immunity. This means protection for trustees is contingent on an issue being properly litigated and resolved between parties in the approval process.

Succession Regime

The case pertains to trust administration and discretionary powers under English common law, specifically addressing court approval requirements for trustees' decisions post-Denaxe Ltd v Cooper [2024] Ch 65. It does not directly involve traditional succession regimes like testate/intestacy.

Precedent Name

  • Re Londonderry's Settlement
  • Tamlin v Edgar
  • Cotton v Brudenell-Bruce
  • Public Trustee v Cooper
  • National Westminster Bank v Lucas
  • Denaxe Ltd v Cooper

Cited Statute

  • Civil Procedure Rules 1998
  • Rules of the Supreme Court 1965
  • Trustee Act 1893
  • Law of Property Amendment Act 1859
  • Judicial Trustees Act 1896
  • Trustee Act 1925
  • Rules of the Supreme Court 1883

Judge Name

Paul Matthews

Passage Text

  • "...the protection that trustees obtain from the court's approval depends on the principles of res judicata and abuse of process, not immunity arising from the approval..." (Wythe v Zavos [2024] EWHC 2784 (Ch), Fancourt J)
  • "...the court will be willing to appoint a non-member of the class if the circumstances warrant it..." (Chancery Guide 26.23, cited in judgment)
  • "The very fact that the decision of the trust is momentous... must be demonstrated that the exercise of their discretion is untainted by any collateral purpose..." (Tamlin v Edgar [2011] EWHC 3949 (Ch), Sir Andrew Morritt V-C)

Beneficiary Classes

Child / Issue