Where a court of apart of the United Kingdom is seised of a claim which is principally concerned with a matter over which the courts of anotherpart of the United Kingdomhave exclusive jurisdiction by virtue of Article 16, it shall declare of its own motion that it has no jurisdiction.

Where a defendant domiciled in onepart of the United Kingdom is sued in a court of anotherpart of the United Kingdom and does not enter an appearance, the court shall declare of its own motion that it has no jurisdiction unless its jurisdiction is derived from the provisions of thisTitle.

The court shall stay the proceedings so long as it is not shown that the defendant has been able to receive the document instituting the proceedings or an equivalent document in sufficient time to enable him to arrange for his defence, or that all necessary steps have been taken to this end.

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