Prenuptial Agreements: Are They Legally Binding in the UK?
A prenuptial agreement (a 'prenup') sets out how a couple's money and property would be divided if their marriage or civil partnership ended. People often assume prenups have no force in this country, but that hasn't been true since the Supreme Court's decision in Radmacher v Granatino in 2010. Prenups are still not automatically binding in England and Wales, but a properly made one now carries real weight, and a court will usually hold the couple to it. This guide explains when a prenup will be followed and how to make one that stands up.
- ✓Prenups are not automatically legally binding in England and Wales, but courts give a properly made one significant weight.
- ✓Since Radmacher v Granatino (2010), a court will usually uphold a prenup freely entered into with a full understanding of it, unless that would be unfair.
- ✓To carry weight it needs full financial disclosure, independent legal advice on both sides, and to be signed at least 28 days before the wedding.
- ✓A prenup cannot override the needs of any children, and can't be used to leave one partner in real hardship.
- ✓Scotland treats prenups (marriage contracts) as more readily enforceable than England and Wales.
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England, Scotland, Wales & Northern Ireland.
Are prenups legally binding?
In England and Wales, a prenup is not automatically binding the way an ordinary contract is, a divorce court always keeps the final say over how assets are divided. But the law changed in practice with the Supreme Court case Radmacher v Granatino [2010], which held that:
In other words, a well-drafted prenup that both people understood and agreed to will normally be followed. A rushed, one-sided or unfair one can still be set aside, so how you make it matters as much as what it says.
What makes a prenup stand up in court
These are the safeguards a court looks for before giving a prenup real weight:
- ✓Full and frank financial disclosure, both partners share a complete picture of their assets, income and debts
- ✓Independent legal advice, each partner has their own solicitor, so nobody can say they didn't understand it
- ✓Signed in good time, at least 28 days before the wedding, never sprung on someone at the last minute
- ✓No pressure, entered into freely, with no duress, threats or undue influence
- ✓Fairness, it meets the needs of both partners and, above all, of any children
Who should consider a prenup
A prenup is worth considering if you:
- ✓Are bringing significantly more assets, savings or property into the marriage
- ✓Own a business and want to protect it from being divided
- ✓Are marrying again and want to protect children from a previous relationship
- ✓Expect to inherit, or have already inherited, family money you want to keep separate
- ✓Have very different levels of wealth or debt between you
If you are already married, you can make a postnuptial agreement instead, it works on the same principles. Because a prenup decides what happens to everything you own, it should always be drafted by a family-law solicitor, with each of you separately advised.
Prenups in Scotland and Northern Ireland
Scotland treats prenuptial agreements (often called ‘marriage contracts’) as more readily enforceable than England and Wales. A Scottish court can still set one aside if it was not fair and reasonable at the time it was made, but the starting point is that the agreement stands.
Northern Ireland broadly follows the English approach after Radmacher, prenups are not automatically binding but a properly made one is given significant weight.
Get instant help right now
A Citizens Advice appointment can take weeks. Our free assistant is available 24/7 with no appointment, giving you clear, step-by-step answers about your exact situation, what to do next, and the deadlines that matter.
Need to take action? It can draft a ready-to-send formal letter for you (optional, from £4.99).
England, Scotland, Wales & Northern Ireland.
Frequently asked questions
Are prenuptial agreements legally binding in the UK?
Not automatically in England and Wales, a divorce court keeps the final say. But since Radmacher v Granatino (2010) the courts will normally give effect to a prenup that was freely entered into by both parties with a full appreciation of its implications, unless that would be unfair. So a properly made prenup carries real weight. Scotland treats them as more readily enforceable.
How do I make a prenup that will be upheld?
Give full financial disclosure to each other, make sure each of you has independent legal advice from your own solicitor, sign it at least 28 days before the wedding (never at the last minute), and make sure neither of you is pressured into it. Above all it must be fair and must meet the needs of any children. The closer it is to a fair outcome, the more likely a court is to follow it.
Can a prenup override what's best for our children?
No. A prenup cannot sign away the needs of children, and a court will not enforce one that leaves a partner or children in real hardship. The welfare and financial needs of any children always come first, and a court can depart from a prenup to provide for them.
What's the difference between a prenup and a postnup?
A prenuptial agreement is made before you marry or enter a civil partnership; a postnuptial agreement is made after. They work on the same legal principles set out in Radmacher, and both need full disclosure, independent legal advice and fairness to carry weight. A postnup is useful if you didn't make a prenup before the wedding but now want to record how things would be divided.
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