Nasir v Zavarco Plc [2025] UKSC 5 (19 February 2025)

The appellant subscribed for shares in Zavarco but did not pay cash, claiming shares in another company sufficed. Zavarco obtained a declaratory judgment that shares were unpaid and later sued for the £36 million debt. The Supreme Court held that the doctrine of merger does not apply to declaratory judgments, allowing Zavarco's debt claim to proceed.

Facts

Tan Sri Nasir subscribed for 360 million shares in Zavarco plc worth £36 million upon incorporation in 2011. He transferred shares in a Malaysian company (Zavarco Berhad) instead of paying cash, claiming this satisfied his obligation. Zavarco disagreed and served a call notice demanding payment, followed by a Notice of Intended Forfeiture. In 2016, Zavarco commenced proceedings seeking declarations that the shares were unpaid and that it was entitled to forfeit them. In November 2017, the High Court granted these declarations. Following forfeiture of the shares in June 2018, Zavarco commenced fresh proceedings claiming the £36 million as a debt.

The Appellant’s Argument

The appellant argued that the doctrine of merger applied to the declaratory judgment, meaning Zavarco’s cause of action had merged with and been extinguished by the 2017 judgment. He contended that merger prevents duplicative litigation and applies regardless of whether the remedy sought is damages, debt, or a declaration.

Issues

The central issue was whether the common law doctrine of merger, which provides that a cause of action merges with and is extinguished by a judgment on that cause of action, applies to purely declaratory judgments.

Judgment

The Supreme Court unanimously dismissed the appeal, holding that the doctrine of merger does not apply to declaratory judgments.

Reasoning

Lord Hodge, delivering the judgment of the court, examined the historical development of the doctrine of merger. The doctrine developed to promote finality in litigation by treating a cause of action as extinguished once judgment has been given, with the claimant’s sole right thereafter being a right on the judgment. Historically, this applied where judgments created obligations of a higher nature, particularly coercive judgments ordering payment of money or return of property.

Key reasons for excluding declaratory relief from the doctrine included:

First, the doctrine was fully developed before courts adopted the practice of granting purely declaratory relief, and no case law has ever applied merger to declarations.

Second, a declaration does not create an obligation of a higher nature. It merely confirms an obligation that already exists rather than replacing or extinguishing the underlying right. As Birss J aptly noted in the court below, a declaration which declares a right to exist cannot be said to extinguish that pre-existing right.

Third, there may be justifiable reasons for seeking a declaration before pursuing coercive relief, as occurred here where Zavarco sensibly resolved the forfeiture dispute before claiming the debt.

Fourth, the doctrine of merger has been criticised for its rigidity and capacity to cause injustice, which counsels against extending it to new circumstances.

Fifth, allowing declaratory judgments without excluding subsequent remedies does not create the mischief of duplicative litigation, as issue estoppel prevents contradiction of the declaration’s findings.

Sixth, modern courts have numerous other tools including res judicata, Henderson v Henderson abuse of process, and case management powers to prevent vexatious litigation.

Implications

This judgment clarifies an important but previously uncertain area of English law. It confirms that parties may obtain declaratory relief without thereby losing the right to seek coercive remedies in subsequent proceedings arising from the same facts. This preserves tactical flexibility in litigation while recognising that issue estoppel and other doctrines adequately prevent abusive re-litigation. The decision also provides guidance on the proper scope of the merger doctrine, confining it to coercive judgments that create enforceable obligations. The court expressly reserved judgment on whether merger applies to final injunctions.

Verdict: Appeal dismissed. The doctrine of merger does not apply to declaratory judgments, and Zavarco was entitled to pursue its claim for the £36 million debt notwithstanding the prior declaratory judgment.

Source: Nasir v Zavarco Plc [2025] UKSC 5 (19 February 2025)