4(1)The obligations of a filing member of a multinational group that is part of a multi-parent group may be met by the filing member of any of the groups that are part of that multi-parent group, subject to sub-paragraph (2).U.K.
(2)The obligations of the filing member may not be met by a person nominated under paragraph 2(2) unless the ultimate parent of each group forming the multi-parent group has authorised the nomination.
(3)Any authorisation must be in writing.