VOL. I · Market edition, MMXXVIEngland & Wales · Templates · Reviews · Handoffs
Guide

Prenuptial and Postnuptial Agreements in England and Wales

Whether pre- and post-nuptial agreements are binding in England and Wales, and what courts look for when deciding how much weight to give them.

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By The Counsel editorial deskReviewed against primary legislation and case law for England & WalesLast reviewed 15 June 2026How we source this →
01

Are prenuptial agreements legally binding?

Prenuptial agreements are not automatically legally binding in England and Wales. However, the Supreme Court in Radmacher v Granatino [2010] UKSC 42 established that a nuptial agreement should be given decisive weight — and in most cases upheld — if it was freely entered into by both parties with a full understanding of its implications, unless it would be unfair to hold them to it. In practice, well-drafted agreements are frequently given significant or even conclusive weight by courts, provided the safeguards have been met.

02

What makes a court uphold an agreement

The courts look for several safeguards: independent legal advice for each party before signing; full and frank financial disclosure by both sides; no pressure or duress (the agreement should be signed well before the wedding — at least 28 days is commonly recommended); no vitiating factors such as fraud or misrepresentation; and an agreement that is not unfair, particularly in relation to meeting the parties' needs. An agreement that would leave one spouse in a position of real financial need is likely to be modified or disregarded.

03

Postnuptial agreements

A postnuptial agreement is entered into after the marriage and is subject to substantially the same approach as a prenuptial agreement — the Radmacher principles apply to both. Postnuptial agreements are sometimes used to revisit arrangements after a significant change in circumstances, such as the birth of a child, receipt of an inheritance, or the start of a new business venture. The same safeguards — independent advice, disclosure, and freedom from pressure — are required.

04

The limits of nuptial agreements

Even a well-drafted agreement cannot oust the court's jurisdiction entirely. Courts retain the power to override or modify an agreement that would cause real unfairness, including where circumstances have changed significantly since signing in a way the parties could not have anticipated, or where the agreement fails to meet a party's reasonable needs. Agreements cannot bind the court in relation to arrangements for children, which are always determined on the child's best interests.

05

Reform proposals — not yet enacted

In 2014 the Law Commission proposed introducing 'qualifying nuptial agreements' that would be fully binding if certain statutory safeguards were met. That proposal was not enacted. The Law Commission's December 2024 scoping report revisited the topic, and the June 2026 Government consultation includes nuptial agreements within its scope. As of mid-2026, no legislation has been passed and the Radmacher framework remains the law. Any reform is unlikely to take effect before 2028 at the earliest.

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When should we sign a prenuptial agreement?

As early as possible before the wedding — most practitioners recommend at least 28 days beforehand, and ideally several months. An agreement signed immediately before a wedding may attract scrutiny from a court about whether it was truly freely entered into, as the pressure of imminent ceremony can be seen as affecting free consent.

Can a prenuptial agreement cover everything?

Not entirely. An agreement can specify how particular assets are to be treated on divorce — such as protecting pre-marital wealth or inherited property — but the court retains power to override it if doing so would leave a party in financial need. Arrangements for children cannot be fixed in advance by any agreement; those decisions are always made by reference to the children's welfare at the time.

Can The Counsel draft or validate my prenuptial agreement?

The Counsel is an AI legal information tool — it can help you understand how nuptial agreements work and what the courts look for, but it does not provide legal advice and cannot draft or review an agreement for your specific situation. A prenuptial agreement should always be prepared with independent legal advice from a family solicitor for each party; the quality of that advice is itself one of the factors a court may later consider.

The Counsel is an AI tool for England & Wales. It provides legal information, not legal advice, and does not replace a regulated solicitor. For anything high-value or contested, take advice before you act.

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