1. For the purposes of Article 248(3) of Directive 2009/138/EC, 'significant branch' of an insurance or reinsurance undertaking shall mean a branch of an insurance or reinsurance undertaking for which at least one of the following conditions is met:
(a) the annual gross written premium of the branch exceeds 5 % of the annual gross written premium of the group, measured with reference to the last available consolidated financial statements of the group;
(b) the annual gross written premium of the branch exceeds 5 % of total annual gross written premiums for the life activity, the non-life activity, or both in the Member State in which the risk is situated, measured with reference to the last available financial statements.
Upon its own initiative or following a reasoned request from the supervisory authority responsible for the supervision of a branch, where the branch meets at least one of the conditions in points (a) or (b) of this paragraph, the group supervisor shall invite that sup
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