14.—(1) Paragraph (2) applies where—
(a)a notice under Article 6 or 7 is served on any person; and
(b)the penalty charge to which it relates is not paid before the end of the relevant period (as defined in paragraph (3)).
(2) The Department may serve on that person a statement (a “charge certificate”) to the effect that the penalty charge in question is increased by a specified percentage.
(3) In this Article “relevant period” means—
(a)where no representations are made under Article 9, the period of 28 days from the date of the notice under Article 6 or 7;
(b)where—
(i)representations are made under Article 9;
(ii)a notice of rejection is served under paragraph (4)(b) of that Article; and
(iii)no appeal against the notice of rejection is made,
the period of 28 days from the date of the notice of rejection;
(c)where there has been an unsuccessful appeal against a notice of rejection under Article 9(4)(b), the period of 28 days from the date of the notice of the adjudicator’s decision;
(d)where an appeal against a notice of rejection under Article 9(4)(b) is made but is withdrawn before the adjudicator gives notice of his decision, the period of 14 days from the date on which the appeal is withdrawn.