It's your responsibility to check your PPC is valid each time you use it.
Digital certificate
If you have a digital PPC, an email reminder will be sent to the email address you gave when buying the PPC.
Renewal reminders are sent one month before your PPC is due to expire.
Paper certificate
If you have a paper PPC, you'll only receive a reminder if you've purchased a 12 month certificate.
The reminder will be sent to the postal address you gave when purchasing the PPC.