The steady rise of blended families, where one or both partners bring children, prior relationships, and pre-existing wealth into a marriage, has significantly reshaped the landscape of family law. For practitioners, these cases demand a more nuanced, fact-sensitive approach. SA Law’s Mark Chiverton explores key considerations and emerging challenges, with practical guidance for family lawyers advising clients in this increasingly common context.
Blended families often have layered interpersonal and financial arrangements that resist standardised solutions. Unlike first marriages with shared children and jointly accumulated assets, these relationships frequently involve competing obligations: a spouse’s desire to provide for their current partner may sit alongside a commitment to preserve assets for children from a previous relationship.
This complexity requires lawyers to move beyond formulaic approaches to resolution of matrimonial finances. Pre- and post-nuptial agreements and informal understandings about financial contributions often carry evidential weight. While not always determinative, they can inform the court’s assessment of fairness, particularly where parties’ expectations diverge.
Practitioners should also be alert to the emotional dimension. Disputes involving stepchildren or perceived inequities between biological and non-biological children can intensify conflict. A more conciliatory approach, incorporating mediation or another non-court dispute resolution mechanism, where appropriate, may help preserve relationships and reduce the risk of protracted litigation.
Defining feature
One of the defining features of many blended family divorces is the presence of pre-acquired wealth, whether in the form of inherited assets, family businesses, or trust interests. These assets often pre-date the relationship and may have been intended to benefit a wider family network, including children from earlier relationships.
The legal tension lies in distinguishing between ‘matrimonial’ and ‘non-matrimonial’ property. While courts generally recognise that assets brought into a marriage, or received by way of inheritance, may justify different treatment, this distinction is rarely absolute, as indicated in the recent guidance in the Supreme Court judgement of Standish v Standish [2025] UKSC 26.
Practitioners advising blended families should therefore test the facts against the Standish approach when assessing risk. Where a client seeks to protect pre-acquired or inherited wealth, encourage disciplined separation of that wealth from family spending, clear records of source, and documented rationale and intention.
Conversely, where a client seeks sharing, evidence of source, clear intention over time as shared between parties will strengthen the case that non-matrimonial property has been ‘matrimonialised’.
Complicated structures
Trust structures complicate matters further. Family lawyers must grapple with issues such as whether trust assets can be considered a financial resource, the extent of a party’s control or influence over trustees, and the likelihood of distributions being made. Detailed forensic analysis is often required, including the review of trust deeds, letters of wishes, and patterns of historic distributions.
Practitioners should also anticipate disputes around ‘ring-fencing’ arguments. A party may seek to protect inherited or family wealth for the benefit of their children from a prior relationship, while the other may argue that their needs, particularly housing and income needs, justify recourse to those resources.
Balancing these competing claims requires careful consideration and, often, creative settlement structuring, such as life interest arrangements or deferred capital provisions.
Emerging challenges
As blended families become more prevalent, several recurring challenges are emerging for family lawyers.
Competing needs and priorities
The presence of multiple sets of children, often with differing levels of dependency, complicates the assessment of needs. Courts must weigh the housing and financial requirements of the current spouse against the moral and, in some circumstances, legal obligations owed to children from previous relationships. Practitioners must present clear, evidence-based arguments to ensure that these competing needs are properly balanced.
Evidential complexity
Tracing the origin of assets and demonstrating whether they have been ‘matrimonialised’ can be evidentially demanding. Early and thorough financial disclosure is essential, and practitioners should not hesitate to instruct forensic accountants where appropriate.
Jurisdictional and structural issues
Some blended families involve international elements, including offshore trusts or foreign property. This can introduce additional layers of complexity, including jurisdictional disputes and enforcement challenges. Practitioners must be prepared to coordinate with advisers in other jurisdictions and navigate differing legal frameworks.
Managing client expectations
Clients in blended family situations often have strong views about what constitutes a fair outcome, particularly in relation to protecting children from prior relationships. It is crucial to provide realistic advice about the court’s broad discretion and the fact-sensitive nature of outcomes. Clear communication can help mitigate the risk of entrenched positions and costly litigation.
Blended family divorces demand a sophisticated, tailored approach from family lawyers. The interplay between pre-existing wealth, ongoing obligations and complex family dynamics requires practitioners to combine technical expertise with strategic judgment and sensitivity.
As these cases become more common, those who develop a deep understanding of their clients’ unique challenges and who adopt flexible, client-focused strategies will be best placed to achieve fair and pragmatic outcomes for their clients.
About the author
Mark Chiverton is a senior associate solicitor in the Family Law team at SA Law. He specialises in supporting families and individuals through the difficulties caused by relationship breakdown, particularly the complex financial issues that arise, and he also advises on family law matters affecting children. He has a particular focus on resolving complex matrimonial finance cases, including those involving property portfolios, family businesses, pensions, trusts, investments, inherited wealth, offshore assets and intricate income structures.
