“… if it considered that a decision in another court would be of material assistance in resolving the issues before the tribunal or court in question and that it was expedient to do so.”
“9. The parties were agreed that the proper approach to be adopted as regards an application for a stay in the absence of agreement between the parties in a case in this Tribunal was that set out in Coast Telecom Limited v HMRC[2012] UKFTT 307 (TC) where Judge Berner stated at paragraph 5: “I start by reminding myself of the proper approach to be adopted in considering whether to grant a stay in the absence of agreement between the parties. Although neither party referred to it, I consider that the correct approach is to be derived from Revenue and Customs Commissioners v RBS Deutschland Holdings GmbH[2007] STC 814 where the Court of Session as the Court of Exchequer in Scotland held (at [22]) that a tribunal or court might sist, or stay, proceedings against the wish of a party if it considers that a decision in another court would be of material assistance (not necessarily determinative) in resolving issues before the tribunal or court in question, and that it is expedient to do so.”
“Furthermore, at page 8 of the decision, the Tribunal made a pronouncement to the effect that it would sist proceedings against the wish of one of the parties pending a decision in another court only where that decision would be determinative of the issues before the Tribunal. We do not recognise that proposition as one reflecting normal practice in relation to the exercise of a discretion to sist. As we would see it, a Tribunal or court might sist proceedings against the wish of a party if it considered that a decision in another court would be of material assistance in resolving the issues before the Tribunal or court in question and that it was expedient to do so.” 10. The Tribunal in Coast Telecom went on to stress that it was not enough that another court's determination might provide answers of relevance and that this put the test in RBS Deutschland too low (at paragraph 21): “The question is not whether the determination of another court might provide assistance, but whether it will provide material assistance.” 11. The Tribunal also considered that different factors can apply to a fact-finding Tribunal as referred to in paragraph 22 of its decision: “Where issues of law alone remain in dispute it can be seen that the imminent consideration of the position under EU law could justify a stay of the appeal proceedings. But the same does not hold good where the facts remain to be determined. Many of the questions raised in the references are themselves fact-specific. Accordingly, I do not consider that it would be expedient to order a stay in circumstances where the facts remain to be found by the first instance tribunal.” 12. It is important to note that Coast was an MTIC case with complex factual issues to determine and witnesses on both sides where it is fair to say that the findings of fact are paramount. …”