This article contends that the Hague Choice of Court Agreement Convention’s (‘Hague Convention’) system of ‘qualified’ or ‘partial’ mutual trust may permit anti-suit injunctions, actions for damages for breach of exclusive jurisdiction agreements and anti-enforcement injunctions where such remedies further the objective of the Convention. However, intra-EU Hague Convention cases may arguably not permit remedies for breach of exclusive jurisdiction agreements as they may infringe the principle of mutual trust and the principle of effectiveness of EU law (effet utile) which animate the multilateral jurisdiction and judgments order of the Brussels I Recast Regulation. The relationship between Article 31(2) of the Brussels I Recast and Articles 5 and 6 of the Hague Convention is also mapped in this article. It will be argued that the Hartley-Dogauchi Report’s interpretative approach has much to commend it as it follows the path of least resistance by narrowly construing the right to sue in a non-chosen forum as an exception rather than the norm. This exceptional nature of the right to sue in the non-chosen forum under the Hague Convention can be effectively reconciled with the Recast Regulation's reverse lis pendens rule under Article 31(2). This will usually result in the stay of the proceedings in the non-chosen court as soon as the chosen court is seised. The impact of BREXIT on this area of the law is uncertain but it has been argued that the likely outcome post-BREXIT is that the regime applicable between the UK and the EU (apart from Denmark) in relation to exclusive jurisdiction agreements within the scope of the Hague Convention will be the Hague Convention.