Never mention satnavs, the council will throw that right in your face. Here is a slight revision:
Dear London Borough of Enfield,
I am writing to formally challenge the Penalty Charge Notice (PCN) issued to me on 07-09-2023, relating to an alleged violation of the bus gate regulations at Bull Lane N18 Bus Gate, I would like to bring to your attention the circumstances surrounding this incident.
Unfortunately I was unaware of the bus gate and its associated restrictions due to the unfamiliarity of the area. On the 3rd Sep 2023, I inadvertently entered the bus gate, which resulted in the issuance of a warning letter. However, I did not receive this warning letter until 15th September , a full week after the initial incident.
The PCN was issued for a subsequent incident that took place on 7th Sep 2023 , which was several days before I received the initial warning letter. As the warning letter explicitly stated that it was a new camera installation and provided a cautionary message for future compliance, it is reasonable to assume that I would have taken immediate action to avoid any further violations had I received it promptly.
I take road safety and adherence to traffic regulations seriously and am committed to abiding by all traffic laws. I genuinely had no intention of contravening any traffic regulations on the dates in question.
In light of the aforementioned circumstances, I respectfully request that you review my case and consider waiving the PCN issued on 7th Sep 2023.
Had I received the warning letter in a more timely manner, the incident of 7 September would never have occurred as I would have made sure to take a different route.
I attach a copy of the warning letter for your reference.
Yours faithfully,
You're not enclosing anything, you're attaching it because you're sending this via the council website (the last thing we want to do is risk paper documents being lost or delayed in the post). There is no point in attaching a copy of the PCN, they'll have that in front of them when they look at your case.
Keep a screenshot of the confirmation page.