The Court of Appeal’s decision in Helliwell v Entwistle [2025] EWCA Civ 1055 has attracted national interest, not because it determined what either party should ultimately receive, but because it cast doubt on how the lower court approached some of the most sensitive questions in modern divorce: the value of prenuptial agreements, the role of disclosure, and the fairness of outcomes in economically unequal relationships.
This was a short, childless marriage between Simon Entwistle, a former City trader, and Jenny Helliwell, a wealthy heiress with assets valued in excess of £60 million. The couple met in 2016, began cohabiting in 2017, and married in July 2019 in the Seychelles. On the same day, they signed a prenuptial agreement, governed by English law, which stated that each party would retain their own property and divide any joint property on a 50/50 basis they may accrue during the marriage and made provision for no financial claims in divorce. The full extent of Helliwell’s assets had not been declared in the prenuptial agreement.
When the marriage broke down in 2022, Entwistle brought financial remedy proceedings. He argued that he had become financially dependent on the lifestyle they shared during the marriage, and that the agreement should not be enforced in circumstances where full disclosure had not been made. Helliwell, for her part, argued that the prenuptial agreement remained binding, and that her assets (held primarily in trust) were non-matrimonial and immune from claim.
The prenuptial agreement and its limits
The agreement signed on the day of the wedding included standard recitals confirming that both parties had obtained legal advice and had provided full and frank disclosure of their financial positions. It also included appendices setting out the stated value of each party’s assets and liabilities. On the face of it, the structure was sound. But the reality, as the Court of Appeal later observed, was far from straightforward.
When the case first came before Mr Justice Francis in the High Court, the judge upheld the agreement and found that it should be given decisive weight. He nonetheless awarded the husband a modest lump sum (around £400,000) to cover short-term needs, particularly housing and basic income. The court did not assess those needs in detail. It considered them minor, and saw no reason to depart from the parties’ original contractual position. A costs order was made against the husband given that he had been offered more by his wife in financial negotiations.
Entwistle appealed, arguing that the agreement had been entered into without proper disclosure, that his financial needs had not been fully assessed, and that the outcome had been shaped, whether consciously or not, by assumptions about his role as a man seeking financial provision.
What the Court of Appeal decided
The appeal succeeded. The Court of Appeal did not replace the outcome with a new financial award, nor did it declare that the husband was entitled to a greater share of wealth. What it did find was that the trial judge had erred in law by giving effect to the prenuptial agreement without properly interrogating whether the financial disclosure it relied upon was accurate and complete.
On the evidence, it was clear that Helliwell had disclosed only a fraction (roughly 27%) of her overall wealth when the agreement was signed. Much of her interest in family trusts and offshore structures was excluded from the financial schedule. While the wife’s team argued that she had been concerned about tax or had misunderstood what was required, the Court found that these omissions were not incidental. The agreement included explicit language about disclosure and was built on the assumption that both parties were entering into it in full knowledge of the facts.
The appeal court found that the judge below had accepted the existence of the agreement at face value, and had failed to scrutinise whether it met the standard of fairness set out in the leading case of Radmacher v Granatino. Without full and frank financial disclosure, there could be no assurance that Entwistle understood what he was giving up by signing the agreement. The matter was therefore remitted to the High Court for a fresh hearing.
Lifestyle during marriage
One of the more contentious aspects of Entwistle’s case was his assertion that he had become accustomed to an affluent, international lifestyle that he could not replicate alone. During the marriage, the couple had travelled widely, stayed in luxury accommodation, and enjoyed a standard of living that far exceeded the husband’s independent financial means. He contended that this created a legitimate expectation of support.
Mr Justice Francis rejected that view. In his original decision, he made clear that exposure to wealth does not generate entitlement. The Family Court does not preserve lifestyle as a matter of course, particularly in short marriages. While the judge recognised that some level of support might be appropriate, he saw no basis for a needs award that would allow the husband to continue living in the manner to which he had become accustomed.
The Court of Appeal did not displace that principle. It reaffirmed the longstanding position that lifestyle alone is not determinative. However, it expressed concern that the trial judge had not fully analysed whether the husband’s basic needs, particularly for housing, had been fairly met. It noted that there is a difference between an unrealistic claim to luxury and a legitimate claim to financial security after a period of economic dependence. In short, the issue was not whether Entwistle could remain in five-star hotels, but whether he should be left to struggle in a markedly different reality, having rearranged his life during the marriage.
The importance of good faith and full disclosure in prenups
Perhaps the clearest legal takeaway from the Court of Appeal’s decision is the continuing centrality of good faith and disclosure in the creation of enforceable prenuptial agreements. The law has moved a long way since prenups were considered contrary to public policy. They are now given considerable weight. But they are not immune from challenge, and the process by which they are reached remains under scrutiny.
In this case, the agreement’s structure and legal advice were not enough to save it. The schedules attached to it were materially inaccurate, omitting substantial interests. The court found that this undermined the core foundation on which the agreement was built. What mattered was not simply what was signed, but whether the parties had a shared and accurate understanding of what was being contracted.
The court’s message is measured but firm: without transparency, a prenup is vulnerable. Disclosure cannot be assumed or approximated. Where a party seeks to rely on a document to prevent financial claims in divorce, they must be able to demonstrate that the agreement was entered into freely, with proper advice, and in full knowledge of the financial landscape. Anything less invites challenge.
Gender fairness and consistent scrutiny
Much of the media interest in this case has focused on the husband’s argument that he was treated unfairly because of his gender. He claimed that a woman in the same position (eg, financially weaker, reliant on a wealthier spouse) might have received more generous provision, and that the court had underestimated his vulnerability because of assumptions about male independence.
The Court of Appeal did not determine that gender bias had occurred. But it did acknowledge that the issue was worth raising. It reminded practitioners that fairness must be assessed without reference to the sex of the applicant, and that assumptions about dependency, resilience, or lifestyle should not be gendered.
In this respect, the case is less a statement of new law than a reflection of the continued evolution of family justice. It is a reminder that parties should be evaluated on their circumstances, not on societal expectations. Gender neutrality in outcome requires gender neutrality in reasoning.
A case remitted, not resolved
The Court of Appeal has not awarded Simon Entwistle any additional money. It has not declared the prenuptial agreement void, nor has it made a definitive ruling on how his needs should be met. What it has done is identify that the process in the court below was flawed, and that the reasoning used to support the outcome did not stand up to scrutiny. The matter will now return to the High Court for a fresh hearing.
What happens next remains to be seen. But the case offers valuable guidance to family lawyers and clients alike. It reinforces that prenuptial agreements must be grounded in transparency and fairness – not just in form, but in substance. It reminds us that lifestyle, while relevant to context, is not a measure of entitlement. And it encourages us to remain alert to how assumptions, particularly gendered ones, can quietly shape expectations and decisions, even in a system designed to prevent them.
Reflections for clients and practitioners
At Buckles, we support clients across the full spectrum of family law, from planning and protection through to litigation and resolution. Cases like Helliwell v Entwistle demonstrate that the strongest agreements are those built on candour and transparency, the most persuasive claims are those rooted in clear need, and the most robust processes are those that hold up under close examination. Fairness is not just an outcome, it’s a standard that must apply at every stage.
