(1) Part 4A of the Act shall apply in the case of persons who have permission at the date this Order comes into force to carry out the activity specified in article 53 of the principal Order and who wish to carry out the activity specified in article 52B of that Order as follows.

(2) Where P is a person to whom paragraph (1) applies -

(a) the procedures established under sections 44 and 45 in respect of application for permission shall not apply in respect of permission to carry out the article 52B activity,

(b) P shall be deemed to have such a permission if he has notified the Authority in writing of his wish to undertake the activity and the Authority has acknowledged receipt of P’s notification in writing from the date of the acknowledgement.