Free Traffic Legal Advice

Please describe what the loading was and why it was being undertaken at that location. Loading "shopping" is not loading, and picking up a takeaway is also not loading.

The whole of Coventry city centre is a Restricted Parking Zone. Parking is only permitted in marked bays on the street. Here are the entry signs: -
https://maps.app.goo.gl/8BVpf9Xvn4D4Cqwr7
Note that although loading is not restricted, the onus is on the claimer of the exemption to prove loading if a PCN is served to an unattended vehicle. I doubt whether picking up a takeaway would come within the loading exemption.

You can give it a go, but Coventry have put up repeater signs around the zone because it is very large. Give us a GSV link to the precise location, so we can have a mozy around. why not also check your route into the city to see if the entry signs are there or not. If they aren't you have a good appeal argument.

BTW If you take them to the Traffic Penalty Tribunal the full PCN penalty will be in play.

You can see the sign for the bay on the lamppost near the bus stop. There is a repeater sign about the RPX, but it's on the other side of the zebra crossing: -
https://maps.app.goo.gl/TKXvUZMBGPKqrbfx6

Essentially, whilst you may struggle to overturn the PCN it is worth submitting representations that whilst you were outside the bay, you thought you had parked legally, but have subsequently been shown the RPX repeater sign. However, this sign is situated on the other side of the Zebra crossing, and you consider that a repeater sign on the side where you parked would have been noticed by yourself; you saw no reason to look for a sign other than the sign for the bay which is for Blue Badge holders, so you parked outside that in what was clearly a parking bay. as it was set back from the main carriageway.

Post up their response when you get it, but don't get upset if they reject it, as almost all informal reps get a Fob-Off letter in response thus daring you to risk the full penalty.

You can make out your number plate on one of the photos, so I don't think there is any appeal mileage there, because photos are not a legal requirement in the enforcement process.