Part 9--
insert--
(1) This section applies if, before the commencement of this section, a witness is given a notice to witness in relation to the trial of a person.
(2) Sections 559, 590AA, 593A and 597A, as in force immediately before the commencement of this section, continue to have effect in relation to the notice to witness until--
(a) the trial of the person is concluded; or
(b) the court otherwise directs; or
(c) 3 years after the commencement of this section;
whichever happens first.'.