Pre-nuptial agreements — commonly known as pre-nups — have come a long way in England and Wales. Once dismissed by courts as contrary to public policy, they are now a mainstream part of financial planning for couples approaching marriage. But confusion and misconceptions remain. This guide cuts through the noise and explains everything you need to know about pre-nups in 2026.
A pre-nuptial agreement is a legal document created before marriage that sets out how assets, property, debts, and finances should be divided if the relationship breaks down. It can cover virtually any financial matter: the family home, savings and investments, business interests and shares, pensions, debts, and even arrangements for maintenance (spousal support).
The legal landscape for pre-nups in England and Wales changed dramatically in 2010 with the Supreme Court case Radmacher v Granatino. The court held that a pre-nuptial agreement should be given 'decisive weight' provided it was 'freely entered into by each party with a full appreciation of its implications' — unless it would be 'unfair to hold the parties to their agreement'.
Since Radmacher, courts have consistently upheld well-drafted pre-nups. However, they are not automatically legally binding — unlike in many other countries, including Scotland, France, Germany, and most US states. This means a court retains the ultimate discretion to depart from a pre-nup if it considers the terms unfair.
For a pre-nup to carry maximum weight in court, several conditions should be met. First, both parties must receive independent legal advice — meaning each person has their own advisor who explains the implications. Second, there must be full and frank financial disclosure from both sides — no hidden assets or debts. Third, the agreement must be signed at least 28 days before the wedding — to avoid any suggestion of last-minute pressure. Fourth, neither party should have been under undue influence, duress, or pressure. Fifth, the terms must be broadly fair and must not leave either party in a position of 'real need'.
So who should consider a pre-nup? In practice, pre-nups are valuable for anyone who brings significant assets into the marriage — a property, savings, or investments. They're particularly important for business owners who want to protect their company from being divided on divorce; people expecting to receive an inheritance or who have already inherited family wealth; those with children from a previous relationship who want to protect those children's financial security; people remarrying after a previous divorce; and couples where there's a significant disparity in wealth.
But pre-nups aren't just for the wealthy. Any couple can benefit from the clarity and certainty that a pre-nup provides. It forces you to have honest conversations about money — conversations that many couples avoid until it's too late. Research consistently shows that financial disagreements are one of the leading causes of divorce. A pre-nup can actually strengthen your relationship by getting these conversations out of the way before they become sources of conflict.
At Castle Family Legal, we draft bespoke pre-nuptial agreements tailored to your unique circumstances. We take the time to understand your assets, your concerns, and your priorities — then create a clear, fair document that protects both parties. We can also advise the other party to seek independent legal advice and facilitate the process of full financial disclosure.
We also offer Post-Nuptial Agreements for couples who are already married but wish to formalise financial arrangements. Post-nups follow exactly the same principles as pre-nups and carry similar weight in court. They're ideal for couples who didn't get a pre-nup before their wedding, or whose circumstances have changed significantly since marriage.
Our pre-nuptial agreements are priced on application because every agreement is different. Some are straightforward; others involve complex asset structures, business valuations, or international elements. We'll always provide a clear, honest estimate before any work begins.
If you're getting married, remarrying, or entering a civil partnership and want to protect your financial future, contact Castle Family Legal for a confidential, no-obligation discussion. Call us on 07868 588 798, email g.stevens@castlefamilylegal.co.uk, or reach out via WhatsApp.
