Paragraph 24

Where before the commencement of section twenty-two a notice had been given in respect of a work under section fourteen of the Act of 1911 (which contains provisions corresponding to section twenty-two), and that notice had not been withdrawn and had not otherwise ceased to have effect before the commencement of section twenty-two, the notice shall have effect after the commencement of that section as if it had been duly given thereunder:

Provided that a notice shall not continue to have effect by virtue of this paragraph after the end of the period of six months beginning with the commencement of section twenty-two.