(1) A provider of number-based interpersonal communications services which attributes numbers from a numbering plan shall, for the purpose of Regulation 13(3)(b) or (5)(b), record or cause to be recorded in the National Directory Database the relevant information specified in paragraph (3) in respect of a line of any one of its subscribers who -

(a) is, upon the making of these Regulations, an ex-directory subscriber in respect of that line who, in the absence of any express instructions to the contrary, shall be taken not to consent to unsolicited calls for the purpose of direct marketing or to such calls by means of an automated calling machine or a facsimile machine, or

(b) had, at any time after the establishment of that Database, made a request to the operator or notified the relevant provider that the subscriber does not consent to unsolicited calls for the purpose of direct marketing or to such calls by means of an automated calling machine or a facsimile machine to a line of that subscriber.

(2) A provider referred to in paragraph (1) that has not already done so shall ensure that its subscribers are provided with information regarding their entitlements under Regulation 13(1), (3)(b) and (5)(b) and the possibilities referred to in paragraph (1).