(1)Every notice under this Act or under any order or regulation made under this Act must be in writing.
(2)The Ministers may make such orders as they think fit for prescribing and regulating the form and mode of service or delivery of notices and other instruments.
(3)Any notice or other instrument under this Act or under an order of the Minister or a regulation of a local authority may be served on the person to be affected by it, either—
(a)by its delivery to him personally; or
(b)by the leaving of it for him at his last known place of abode or business; or
(c)by the sending of it through the post in a letter addressed to him at his last known place of abode or business.
(4)A notice or other instrument—
(a)to be served on the occupier of any building, land or place, may, except when sent by post, be addressed to him by the designation of the occupier of that building, land or place, without naming or further describing him; and
(b)where it is to be served on the several occupiers of several buildings, lands or places, may, except when sent by post, be addressed to them collectively by the designation of the occupiers of those several buildings, lands or places, without further naming or describing them, but separate copies of it being served on them severally.