152. Who may make a Part 18 offer and in respect of what may it be made

(1) A Part 18 offer may be made by a claimant or a defendant in respect of the whole, or part of, or any issue that arises in a claim, counterclaim or other additional claim or an appeal or cross-appeal from a decision made at a trial.
(2) The offer may be made at any time, including before the commencement of proceedings.
(3) It is made when it is served on the offeree.