(1) Subject to paragraph (2), where any written notice or document is to be given or supplied to the officer concerned under these Regulations, it must be—
(a) given to the officer in person;
(b) sent to the officer by e-mail or other means of electronic communication;
(c) given to the officer in person by the officer's police friend where the police friend has agreed with the appropriate authority to deliver the notice or document, or
(d) given to the officer in any other manner agreed between the person who is required to give the notice or document and the officer.
(2) Where it is not reasonably practicable to give or supply a written notice or document to the officer concerned under paragraph (1)(a) or (b) and there is no agreement under paragraph (1)(c) or (d), the written notice or document must be—
(a) left with a person at the officer’s last known address, or
(b) sent to the officer’s last known address by first class post by recorded delivery or other service which provides for delivery on the next working day (“by post”).
(3) Where a written notice or document is sent by e-mail or other means of electronic communication, it is to be taken to have been given or supplied to the officer concerned—
(a) if the e-mail or other electronic transmission is sent on a working day before 4.30 p.m., on that day, or
(b) in any other case, on the next working day after the day on which it was sent.
(4) Where a written notice or document is sent by post, it is to be taken to have been given or supplied to the officer concerned—
(a) on the second day after it was posted, left with, delivered to or collected by the relevant service provider, provided that day is a working day, or
(b) in any other case, on the next working day after the day on which it was posted, left with, delivered to or collected by the relevant service provider.