1. The coordination measures prescribed by this Directive shall apply to companies and firms within the meaning of the second paragraph of Article 58 of the Treaty which are:

(a) undertakings within the meaning of Article 1 of Directive 73/239/EEC, excluding those mutual associations which are excluded from the scope of that Directive by virtue of Article 3 thereof but including those bodies referred to in Article 4(a), (b), (c) and (e) thereof except where their activity does not consist wholly or mainly in carrying on insurance business;

(b) undertakings within the meaning of Article 1 of Directive 79/267/EEC, excluding those bodies and mutual associations referred to in Articles 2(2) and (3) and 3 of that Directive; or

(c) undertakings carrying on reinsurance business.

In this Directive, such undertakings shall be referred to as insurance undertakings.