1. In order to carry out the tasks conferred on it by this Regulation, and subject to other conditions set out in relevant Union law, the ECB may in accordance with Article 13 and subject to prior notification to the national competent authority concerned conduct all necessary on-site inspections at the business premises of the legal persons referred to in Article 10(1) and any other undertaking included in supervision on a consolidated basis where the ECB is the consolidating supervisor in accordance with point (g) of Article 4(1). Where the proper conduct and efficiency of the inspection so require, the ECB may carry out the on-site inspection without prior announcement to those legal persons.