Discretionary Sist in Scottish Divorce Proceedings: Prima Facie Natural Forum and the Need for Cogent Proof of Substantial Injustice Abroad

1) Introduction

This Outer House decision of Lady Tait concerns whether a Scottish divorce action—competently raised on the basis of the defender’s habitual residence in Scotland—should be sisted (stayed) to allow later-raised Nigerian divorce proceedings to be disposed of first, under paragraph 9 of Schedule 3 to the Domicile and Matrimonial Proceedings Act 1973 (“the 1973 Act”).

The parties married in Nigeria in 2005 and lived there until 2013, thereafter living in the Netherlands, Qatar, and (for the defender and the parties’ son) Scotland from April 2024 until the defender’s employment assignment ended early in December 2025. The pursuer raised divorce proceedings in Scotland in August 2025; the defender then petitioned for divorce in Delta State, Nigeria. The Nigerian petition was struck out at first instance (because of the pending UK case), and the defender appealed.

The key issues were:

  • whether Nigeria was prima facie the more appropriate forum (the “natural forum”) despite the Scottish court’s admitted jurisdiction; and
  • whether the pursuer had shown circumstances such that justice nevertheless required the Scottish action to proceed (including alleged inability to participate safely/effectively in Nigeria and alleged systemic unfairness).

2) Summary of the Judgment

Lady Tait granted the defender’s motion for a discretionary sist. Although Scotland had jurisdiction (based on the defender’s habitual residence for the requisite period), the court held that Nigeria was prima facie the more appropriate forum given the parties’ and marriage’s connections to Nigeria, the defender’s domicile and present residence there, the presence of assets requiring enforcement in Nigeria, and the absence of meaningful Scottish connections.

The court rejected the pursuer’s contention that justice required the Scottish proceedings to continue. In particular, the pursuer’s allegations of patriarchal bias, safety risk, and lack of effective participation in Nigeria were found to be unsupported by evidence sufficient to demonstrate a real risk of substantial injustice, especially in light of expert evidence on Nigerian procedural protections, remote participation options, and domestic violence legislation. Expenses were reserved.

3) Analysis

A) Precedents Cited

i) De Dampierre v De Dampierre 1988 AC 92

Lady Tait treated paragraph 9 of Schedule 3 as importing the common-law approach to forum non conveniens where there is a lis alibi pendens (parallel proceedings elsewhere), citing De Dampierre v De Dampierre 1988 AC 92.

Two aspects of de Dampierre were central:

  • The moving party must show another available forum is clearly more appropriate; but even where the Scottish pursuer loses a “legitimate personal or juridical advantage,” that is not usually decisive if substantial justice will be done abroad.
  • The decision reflects judicial restraint and comity: the Scottish court should not refuse a sist merely because the overseas forum is different or less advantageous in outcome or procedure.

ii) Mitchell v Mitchell 1992 SC 372

Mitchell v Mitchell 1992 SC 372 supplied the court’s organising framework for weighing connections: the court should first consider the “overall connection of the marriage” to the competing jurisdictions. If another forum is prima facie more appropriate, a sist should ordinarily follow unless justice requires otherwise.

Lady Tait explicitly applied the Mitchell formulation (quoted at para [68]) and treated the absence of substantial weight to “who sued first” as consistent with Mitchell, especially where both cases are at an early stage.

iii) Spiliada Maritime Corp v Cansulex Ltd [1987] AC 460

The submissions were framed around the two-stage test in Spiliada Maritime Corp v Cansulex Ltd [1987] AC 460:

  1. The defender must show another available forum is the appropriate forum for trial “more suitably for the interests of all the parties and the ends of justice.”
  2. If that is shown, the burden shifts: the pursuer must show “special circumstances” such that justice requires the Scottish proceedings to continue.

While the decision is a statutory “discretionary sist” case, Spiliada strongly shaped how the court assessed appropriateness (connections, convenience, enforcement realities) and how it evaluated the pursuer’s claims of unfairness abroad (requiring a real risk of injustice, not assertion).

iv) The Abidin Daver [1984] AC 398

Via Spiliada, Lady Tait referenced Lord Keith’s “most real and substantial connection” language from The Abidin Daver [1984] AC 398, reinforcing that “appropriateness” is anchored in practical and juridical connections, not merely the existence of Scottish jurisdiction.

v) Anton, Private International Law, 3rdEdition, paragraph 16.16

The court relied on Anton’s formulation (quoted at para [8]) aligning the discretionary sist test with the common-law stay: the respondent must show another available forum is clearly more appropriate; if so, a sist follows unless justice requires otherwise. This anchored the statutory discretion in established conflict-of-laws methodology.

B) Legal Reasoning

i) The statutory gateway: paragraph 9 of Schedule 3 (1973 Act)

The court first confirmed the statutory conditions:

  • Other proceedings “in respect of the marriage” were continuing in another jurisdiction (Nigeria), notwithstanding the Nigerian strike-out because an appeal was pending.
  • The decisive question became whether, on the “balance of fairness (including convenience),” it was appropriate that the Nigerian proceedings be disposed of first.

ii) Stage 1—Prima facie appropriate forum

Lady Tait held that “at present, neither party has any connection to Scotland” (para [62]). The defender’s Scottish residence was always time-limited and employment-related; the court rejected the suggestion that the defender’s return to Nigeria in January 2026 was engineered to influence the sist motion.

In identifying Nigeria as prima facie the more appropriate forum (paras [69]–[70]), the court emphasized:

  • Strong Nigerian connecting factors: marriage and early cohabitation in Nigeria; both children born there; defender’s Nigerian domicile/citizenship; defender and son now resident in Nigeria.
  • Absence of Scottish connecting factors: no matrimonial assets in Scotland (save a bank account); neither party resident there; no witnesses based there.
  • Enforcement reality: orders would require effect in Nigeria, with assets and/or enforcement needs there—making Scotland a less practical forum.
  • International profile acknowledged but not decisive: although assets and life were multi-jurisdictional, that did not create a positive Scottish connection.

iii) Stage 2—Whether justice required Scotland to proceed

The pursuer’s opposition centred on (a) uncertainty over Nigerian jurisdiction/procedure and (b) ability to participate safely and effectively. Lady Tait treated these points as insufficient to displace the prima facie natural forum.

Key evaluative steps included:

  • Nigerian jurisdiction uncertainty did not justify refusing a sist. The Nigerian proceedings had been struck out on “multiplicity of suits” grounds and non-disclosure issues, not on a fundamental absence of jurisdiction based on domicile (para [65]). The appeal was “arguable,” and it was for the Nigerian courts to decide. Importantly, the court noted that if the defender ultimately failed in Nigeria, the pursuer could seek recall of the sist (para [65]).
  • Delay/expense was not one-sided. The pursuer argued Scotland could provide immediate progress; however, the defender disputed the Scottish “relevant date” (separation), making a preliminary proof likely in Scotland (para [66]). Thus, both jurisdictions presented preliminary hurdles.
  • No cogent basis for substantial injustice. The court relied on both Nigerian law experts as describing a functioning system capable of fair adjudication, including the possibility of remote hearings and procedural protections (paras [69]–[70]). Allegations of patriarchal bias and safety fears were treated as “unfounded in evidence” (para [69]).
  • Comity and deference to foreign courts. The pursuer’s counsel did not ultimately contend that Nigerian financial provision rules would produce demonstrable injustice (para [64]); Lady Tait considered that, with that concession and the expert materials, comity required due deference to the Nigerian system.

C) Impact

The decision is significant for Scottish family and private international law practice in three main ways:

  1. Jurisdiction is not the end of the inquiry: even where Scottish jurisdiction is admitted (habitual residence), a sist can be granted if Scotland lacks substantive connecting factors and another forum is prima facie more appropriate.
  2. “Substantial injustice” requires evidence, not generalised claims: allegations that a foreign forum is patriarchal, unsafe, or procedurally deficient must be supported by cogent material tied to the case, especially where expert evidence indicates legal protections and procedural adaptability.
  3. International asset cases foreground enforcement practicality: the location of assets and the likely locus of enforcement can strongly influence “appropriateness,” particularly where there are no Scottish assets and neither party remains in Scotland.

More broadly, the judgment signals that Scotland will not readily function as a “neutral venue” for globally mobile families when Scottish connections are ephemeral and when another forum has deeper relational and enforcement links.

4) Complex Concepts Simplified

  • Discretionary sist: a court-ordered pause in proceedings. Here, it stops the Scottish divorce action temporarily so the Nigerian proceedings can be decided first.
  • Forum non conveniens: a doctrine allowing a court to stay a case if another court is clearly a more suitable place to hear it. Under the 1973 Act, the same approach is used when considering a sist in matrimonial cases.
  • Lis alibi pendens: “a dispute pending elsewhere”—parallel proceedings in another jurisdiction about the same marriage.
  • Habitual residence vs domicile: habitual residence is where someone is living as part of the regular pattern of their life; domicile is a deeper legal “home” concept, often rooted in origin and intention. Scotland’s jurisdiction here was based on habitual residence; Nigeria’s jurisdiction was argued from domicile.
  • Comity: respect by one legal system for another’s courts and processes. It does not mean automatic acceptance, but it discourages assuming foreign courts are unfair without strong proof.
  • Two-stage (Spiliada) test: (1) defender shows another forum is the natural/appropriate forum; (2) pursuer must then show special circumstances why justice still requires the case to proceed in Scotland.
  • Multiplicity of suits: raising parallel cases in different courts about the same dispute, potentially abusive or wasteful. It was central to the Nigerian strike-out decision, now under appeal.

5) Conclusion

Lady Tait’s decision applies the forum non conveniens methodology—through paragraph 9 of Schedule 3 of the 1973 Act—to conclude that Nigeria was prima facie the more appropriate forum for the parties’ divorce, given the marriage’s stronger Nigerian connections, the defender and son’s residence there, the absence of Scottish assets and witnesses, and enforcement realities.

The judgment underscores that a pursuer resisting a sist must do more than point to procedural uncertainty or broad concerns about a foreign system: absent cogent evidence of a real risk of substantial injustice, and where expert evidence supports access to justice (including remote participation), the Scottish court will be prepared to sist proceedings even where Scottish jurisdiction exists.