OK, no Regulation 9 PCN, (under the Traffic Management Act 2004), so no service of it. Keep the yellow envelope as you may need it later when appealing.
The next question is - are you the owner of the car, and hold the V5C Registration Certificate, (aka Logbook), and if so, is the name and address on it correct and up-to-date ?
Reason to ask, is that the next stage of the enforcement process is they will serve a Notice to Owner to the name and address on the V5C.
