
Estoppel explained: What the UK Supreme Court's latest decisions mean for offshore litigation What is estoppel? The narrow limits of issue estoppel Practical guidance for offshore litigators
The UK Supreme Court has recently delivered judgment in Skatteforvaltningen v MCML Ltd which has helped focus the parameters of estoppel, together with previous landmark decisions, such as Tinkler v HMRC estoppel by convention (Harneys' article on Tinkler can be viewed here), and Guest v Guest, regarding proprietary estoppel (Harneys' article on Guest can be viewed here). In this article, we analyse the key decisions and consider what they mean for practitioners in the BVI and other offshore jurisdictions. Estoppel is a term used to refer to a collection of legal doctrines, all of which are underpinned by the concepts of equity, unconscionability and the prevention of injustice. The most common estoppels are as follows: Issue estoppel prevents a party from re-litigating an issue of fact or law that has been finally determined in earlier proceedings between the same parties. It promotes finality and efficiency. Estoppel by convention prevents a party from resiling from a common assumption of fact or law on which both parties have conducted their dealings, where it would be unconscionable to permit departure from that assumption. Proprietary estoppel arises where a person has been given an assurance regarding rights in property, has relied on that assurance to their detriment, and it would be unconscionable not to give effect to the expectation created. Estoppel by representation operates to protect against a departure from an assertion of fact or law intending it to be relied on and which was relied on by the other party to their detriment. Whilst issue estoppel can have a 'very powerful effect', the Supreme Court has recently confirmed that it is a narrow doctrine, which has a different role than the abuse of process doctrine (see the rule in Henderson v Henderson). Any unfairness created by a party failing to put some point in issue, when they could have, will be addressed by the Henderson rule. In Skatteforvaltningen, the Supreme Court considered whether SKAT, the Danish Customs and Tax Administration, could bring a fraud claim after an earlier claim for negligent misrepresentation had been brought, and dismissed, against the same financial brokerage business. The Court of Appeal treated the earlier decision as creating an issue estoppel; whereas the Supreme Court disagreed and unanimously allowed the appeal. The case gave the Supreme Court the opportunity to consider issue estoppel in more detail and the court concluded that when carrying out an estoppel analysis, the question to ask is whether the issue was necessary and fundamental to the prior decision; with the pleadings being a critical consideration during this analysis. The court found that the factual and legal bases of the fraud claim were not traversable to the negligent misrepresentation claim. As a result of the court's findings, it was unnecessary for the court to look at ground 1 of the appeal which argued that an issue estoppel could arise from a prior court's formulation of a legal principle or articulation of legal reasoning. From the perspective of a claimant, the case confirms that they can bring a new claim if it arises out of new or different legal or factual circumstances. Defendants will have to grapple with the fact that issue estoppel will only intervene in narrow circumstances where the issue decided in the prior proceedings were necessary and fundamental to the decision; and 'whether an issue arose on the parties' pleadings in the prior civil proceedings is critical in deciding whether its determination was necessary and fundamental'. The message to commercial litigators from this case is clear: ensure your pleadings are precise and properly framed from the outset of the litigation. For offshore practitioners, particularly in fraud and asset-recovery litigation involving overlapping parties or successive causes of action, Skatteforvaltningen is a warning against treating a previous dismissal as a general answer to a subsequent case pleaded diff...







