Due service under section 35(3) of this Act is effected by delivering the notice in question to the owner or by sending it by registered post, or the recorded delivery service, addressed to him at an appropriate place.

An acknowledgement, signed by the owner, which conforms to Form A of schedule 10 to this Act, or as the case may be a certificate which conforms to Form B of that schedule and is accompanied by the postal receipt, shall be sufficient evidence of such due service; and if the notice in question is, under subsection (1) above, sent by post but is returned to the person who is entitled to compensation with an intimation that it could not be delivered, the notice may be delivered or sent by post, with that intimation, to the Extractor of the Court of Session, the delivery or sending to the Extractor being taken to be equivalent to the service of that notice on the owner.

For the purposes of subsection (2) above, an acknowledgement of receipt by the Extractor on a copy of that notice shall be sufficient evidence of its receipt by him.

The date on which notice under section 35(3) of this Act is served on an owner is the date of delivery, or as the case may be of posting, in compliance with subsection (1) or (2) above.