23.—(1) The provisions of this Part have effect for the purposes of, and in connection with, the exercise of the freedom of the provider of a service who is established in another EEA state to provide the service in the United Kingdom from that state.
(2) Accordingly, in this Part—
(a)references to the provider of a service are references to the provider of a service exercising that freedom;
(b)references to access to, or the exercise of, a service activity are references to access to, or the exercise of, the activity by the provider of a service in the exercise of that freedom.