(1) In order to qualify for leniency for participation in a cartel an undertaking that has applied to the competent authority for leniency shall -
(a) end its involvement in the alleged cartel at the latest immediately following the submission of its leniency statement, except in cases where a delay would, in the view of the competent authority, be reasonably necessary to preserve the integrity of its investigation,
(b) cooperate genuinely, fully, and on a continuous basis and expeditiously with the competent authority from the time of its application until the competent authority has closed its enforcement proceedings against all parties under investigation by reason of a decision under section 15X or has otherwise terminated its enforcement proceedings (including continuing to so cooperate where required until the determination of any subsequent proceedings under Part 2H), and such cooperation includes the following:
(i) providing the competent authority promptly with all relevant in
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