3.—(1) A person who has reason to believe he is or has been subject at any time on or after 1st December 1989 to a community charge of a charging authority shall inform the appropriate registration officer accordingly.
(2) A person who is shown in a charging authority’s register as subject to a community charge of the authority and who has reason to believe that the item concerned contains an error or is not complete or up-to-date shall inform the appropriate registration officer accordingly.
(3) The information mentioned in paragraphs (1) and (2) is to be supplied within 21 days of the day on which the person first had reason to believe as mentioned in those paragraphs.
(4) In this regulation “the appropriate registration officer” means the registration officer of the charging authority with respect to whose community charge the person–
(a)has reason to believe he is or has been subject, or
(b)is shown as subject,
as the case may be.