Looking in depth at many of the PCNs currently on our forum, it seems to me that mandatory information is missing as provided at Para. 4 (8 ) (v) of
https://www.legislation.gov.uk/ukla/2003/3/section/4/enacted(v) that, if the penalty charge is not paid before the end of the 28 day period, an increased charge may be payable;
Clearly, this refers to Para. 4 (8 ) (iii):
(iii)that the penalty charge must be paid before the end of the period of 28 days beginning with the date of the notice;
I brought this up at a hearing v Hounslow recently.
https://drive.google.com/file/d/1mpB3obxgDkbzTrC_YbGNPC7K3vhqqKIt/viewAnother point to make is that, when combined with the "old" conflation argument in which many PCNs state "If you do not pay the PCN or make representations before the end of 28 days beginning with the service of the PCN, we may serve you a Charge Certificate", this means that it adds force to the latter argument.
I shall try and give examples later.