Any notice or other document required or authorised to be given, made, delivered or served under this Act or regulations made thereunder may be given, made, delivered or served either—
(a)by delivering it to the person to whom it is to be given, made or delivered, or on whom it is to be served; or
(b)by leaving it at the usual or last known place of abode of that person ; or
(c)by sending it in a prepaid registered letter addressed to that person at his usual or last known place of abode ; or
(d)in the case of an incorporated company or body, the Central Valuation Board or a District Valuation Board, by delivering it to the secretary or clerk of the company, body or Board at their registered or principal office or sending it in a prepaid registered letter addressed to the secretary or clerk of the company, body or Board at that office ; or
(e)if it is not practicable after reasonable inquiry to ascertain the name or address of a person to whom it should be given, made or delivered, or on whom it should be served, as being a person having any interest in land, by addressing it to him by the description of the person having that interest in the premises (naming them) to which it relates, and delivering it to some person on the premises or, if there is no person on the premises to whom it can be delivered, affixing it, or a copy of it, to some conspicuous part of the premises.