159. Acceptance of Part 18 offer in a split trial case

(1) In any case where there has been a trial but the case has not been decided, any Part 18 offer which relates only to parts of the claim or issues that have already been decided can no longer be accepted.
(2) Subject to paragraph (1) and unless the parties agree, any other Part 18 offer cannot be accepted earlier than 7 clear days after judgment is given or handed down in such trial.