KU v BI [2025] EWFC 296 (B) re validity of foreign marriage

An analysis of
KU v BI [2025] EWFC 296 (B) — a decision of note in the Family Court concerning the validity of a foreign (customary) marriage.
Facts & Procedure
- The petitioner (KU) issued a divorce petition on 31 May 2024.
- The parties allegedly entered a “customary marriage” in a foreign country on 30 March 2013.
- The respondent (BI) denied the validity of that ceremony — argued that no legal marriage took place under the law of that foreign country (and thus the petitioner could not obtain a divorce).
- The respondent was already in a valid statutory marriage at the relevant time.
- The court directed a joint expert on the foreign country law (customary marriage law) to advise.
- The final hearing was on 5 September 2025, before Deputy District Judge (Williams) at Leicester Family Court.
Legal Issues
- Whether the ceremony on 30 March 2013 constituted a valid customary marriage under the foreign country’s law (the lex loci celebrationis) — a key step in recognition in England & Wales.
- If the foreign marriage is valid, what is the appropriate remedy under English law: a divorce, a decree of nullity, or a non-marriage declaration (which affects availability of financial remedy rights)?
- Whether the respondent’s existing statutory marriage and domicile triggered the polygamy rule under s 11 of the Matrimonial Causes Act 1973, rendering the subsequent marriage void in England & Wales.
- How to handle issues of absence or proxy ceremonies under the foreign law: specifically whether the parties’ non-presence in the country and lack of formal “handing over of the bride” invalidated the customary ceremony under foreign law.
Judgment & Reasoning
- The court held the foreign customary marriage was valid and recognised in this jurisdiction.
- On the question of ceremony absence: The court found that although the parties were not physically present in the foreign country on the ceremony date, the evidence (payment of dowry/bride-price, video/photographs, celebration in England the same evening, long cohabitation and three children) showed the intent and ceremony structure complied with the foreign law requirements.
- On the expert’s evidence: The court was critical of the expert’s reliance on outdated first-instance authorities and small sample jurisprudence, noting the expert had not heard the respondent’s oral evidence (including his later admissions). The judge concluded that further expert inquiry would be disproportionate.
- Remedy: The court said that if it had found the ceremony invalid under foreign law, it would have granted a decree of nullity rather than treating the relationship as a non-marriage — meaning access to financial remedy rights under s 21 MCA 1973 still preserved.
- Costs: The respondent’s costs claim was refused; the petitioner was legally aided and made no costs claim.
Significance & Practical Take-aways
- This case reaffirms the two-stage approach in foreign marriage validity: (1) apply the law of the place where the marriage was celebrated (lex loci celebrationis) to validity, (2) apply English remedial concepts (void, voidable, non-marriage) under lex fori.
- It emphasises that substance over form is pivotal — even where parties are not physically present in the foreign jurisdiction, if the customary law allows proxy participation and the ceremony meets the requisite elements (such as dowry etc), the marriage may be valid.
- For practitioners: when challenging validity of a foreign marriage, addressing the foreign law requirements (presence, bride-price, handing over) is key, but also fact-finding on conduct (cohabitation, children, reliance) matters.
- The decision underscores that if a marriage is recognised, financial remedy rights attach — so parties cannot escape those by denying the marriage.
- On costs: unsuccessful challenges to validity may incur cost risks; even though the petitioner was aided in this instance, the case highlights the financial exposure in such disputes.
- Importantly, the court noted that even in a marginal foreign validity scenario the remedy of nullity may be appropriate and still preserve rights — a strategic point for solicitors advising clients where foreign marriage validity is in doubt.
Limitations & Considerations
- The case is fact-specific: the combination of evidence (children, cohabitation, ceremony elements) is strong. Other cases with weaker factual matrix may reach different outcomes.
- The court did not purport to extend the law but applied existing principles (e.g., Berthiaume, Assad v Kurter) under private international law.
Practitioners should check the exact wording of the foreign country’s customary law, especially around proxy ceremonies, presence, and formalities, and may still need specialist foreign law advice and translation of evidence.
If you are looking for a divorce lawyer for matrimonial finance, please contact Stephanie Heijdra via sheijdra@winvolvedlegal.co.uk







