(5) The Regulator may withdraw an enforcement notice at any time by giving notice of the  withdrawal to the person to whom the enforcement notice is given.  53. —(1) Where a Regulator considers that a person is liable to a civil penalty under any of  articles 55 to 63 the Regulator may impose a civil penalty on the person.  (2) A civil penalty is imposed on a person by giving a notice (a “penalty notice”) to the person.  (3) Where the civil penalty to which the person is liable consists of a non-escalating penalty  only, or where the civil penalty consists of both a non-escalating penalty and a daily penalty but  the Regulator decides not to impose a daily penalty, the penalty notice must set out—  (4) Where the civil penalty to which the person is liable consists of both a non-escalating  penalty and a daily penalty and the Regulator considers that it may wish to impose a daily penalty,  the Regulator must, before giving a penalty notice to the person, first give a notice (an “initial  notice”) to the person.  (5) The initial notice must set out—  (6) Where, after an initial notice is given to a person, the Regulator considers that the total  amount of the daily penalty to which the person is liable can be calculated, including where the  daily penalty reaches its maximum amount, the Regulator may give a penalty notice to the person.  (7) The penalty notice must set out—  (8) The person to whom a penalty notice is given must pay the civil penalty set out in the notice  to the person set out in the notice on or before the date specified in the notice.  (9) A civil penalty imposed by a penalty notice is recoverable by the Regulator as a civil debt.  28 (f) information about rights of appeal.  (e) how payment may be made, and  (d) the person to whom payment must be made, which must be either the Regulator or the  appropriate national authority,  (c) the date by which the civil penalty must be paid, which must not be less than 28 days  after the day on which the notice is given,  (ii) a daily penalty,  (i) a non-escalating penalty, and  (b) the amount of the civil penalty, including how the amount is calculated, which may  include—  (a) the grounds for liability,  (d) the maximum daily rate of the daily penalty and the maximum amount of the daily  penalty that may be imposed.  (c) that the daily penalty that may be imposed begins to accrue on the day on which the  initial notice is given, and  (b) the maximum amount of the non-escalating penalty that may be imposed,  (a) the grounds for liability,  (f) information about rights of appeal.  (e) how payment may be made, and  (d) the person to whom payment must be made, which must be either the Regulator or the  appropriate national authority,  (c) the date by which the non-escalating penalty must be paid, which must not be less than 28  days after the day on which the notice is given,  (b) the amount of the non-escalating penalty and, where relevant, how the amount is  calculated,  (a) the grounds for liability,  Penalty notices 