Re Tuck's Settlement Trusts [1977]

Re Tuck's Settlement Trusts [1977] EWCA Civ 11 is a significant English trusts law case that addresses the issue of certainty in trusts.

Sir Adolph Tuck, a baronet and owner of the art publisher Raphael Tuck & Sons, created a trust with specific conditions for future baronets related to their marital status and adherence to the Jewish faith. The trust stipulated that the Chief Rabbi in London, either of the Portuguese or Anglo-German Community, would have conclusive decision-making authority if any uncertainty arose. The key elements were the definition of an approved wife and the determination of whether a person was of Jewish blood and adhered to the Jewish faith.

Lord Denning MR, delivering the judgment, held that the trust was valid. He emphasised that the Chief Rabbi could resolve any uncertainty, ensuring the trust's workability. Lord Denning even asserted that the trust would have been valid even without identifying the Chief Rabbi.

The case delves into the concepts of conceptual uncertainty and evidential uncertainty. Conceptual uncertainty arises when a condition is expressed vaguely, making it impossible for the court to apply it. On the other hand, evidential uncertainty arises when the condition is clear, but the court faces difficulties applying it due to uncertainties in the facts. Lord Denning expressed dissatisfaction with this dichotomy, as it often led to defeating the testator's or settlor's intentions based on the perceived lack of clarity.

Lord Russell of Killowen, concurring with Lord Denning MR, pointed out the potential impact of the Chief Rabbi's decision on resolving uncertainty. However, he did not make a definitive ruling on this matter. Eveleigh LJ opined that the trust was valid, but his perspective was conditional. He believed the Chief Rabbi's opinion was crucial for defining the class of beneficiaries. Without this reference, he might not have been able to resolve an uncertain class.

In summary, this case contributes to the understanding of certainty in trusts, highlighting the role of external authorities, such as the Chief Rabbi, in resolving uncertainties and ensuring the enforceability of trusts.
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