1. This Regulation shall not affect any conventions to which the Member States are parties and which, in relation to particular matters, govern jurisdiction or the recognition or enforcement of judgments.

2. With a view to its uniform interpretation, paragraph 1 shall be applied in the following manner:

(a) this Regulation shall not prevent a court of a Member State which is party to a convention on a particular matter from assuming jurisdiction in accordance with that convention, even where the defendant is domiciled in another Member State which is not party to that convention. The court hearing the action shall, in any event, apply Article 28 of this Regulation;

(b) judgments given in a Member State by a court in the exercise of jurisdiction provided for in a convention on a particular matter shall be recognised and enforced in the other Member States in accordance with this Regulation.

Where a convention on a particular matter to which both the Member State of origin and the Member State addressed are parties lays down conditions for the recognition or enforcement of judgments, those conditions shall apply. In any event, the provisions of this Regulation on recognition and enforcement of judgments may be applied.