reg 11I Ceasing to be competent: notification
(1) Where at any time a person (A) ceases to satisfy the requirements in regulation 11F(1), 11F(2), 11G(1) or, as the case may be, 11H(1) in relation to any building work or any design work, A must— (a) in a case where A is the principal designer or the principal contractor, notify the client; (b) in a case where there is more than one contractor and A is a designer, notify the person who asked them to carry out the design work and the principal designer; (c) in a case where there is more than one contractor and A is a contractor, notify the person who asked them to carry out the building work and the principal contractor; (d) in any other case, notify the person who asked them to carry out the work. (2) If at the time of the notification under paragraph (1)(b) there is no principal designer appointed, that paragraph has effect as if the reference to the principal designer were a reference to the client. (3) If at the time of the notification under paragraph (1)(c) there is no principal contractor appointed, that paragraph has effect as if the reference to the principal contractor were a reference to the client.