Article 3U.K.
For the purposes of the first Directive and of this Directive, any permanent presence of an undertaking in the territory of a Member State shall be treated in the same way as an agency or branch, even if that presence does not take the form of a branch or agency, but consists merely of an office managed by the undertaking's own staff or by a person who is independent but has permanent authority to act for the undertaking as an agency would.