Your best bet is to post in the parking forum of
PePiPoo. However what I can tell you is that you've got a very good chance of overturning the ticket (and getting all your money back) on appeal. Bay markings (along with signage)
have to conform to requirements to be enforceable, and if the residents' parking bay was as worn as you say, that should definitely be enough for you to be successful. It's not a "technicality" as some might tell you; bays and signs have to be present and correct, otherwise it's not clear where you can and can't park, and your case (where you genuinely and reasonably thought it was OK to park) is a good example.
Once you get your money back, you could take the council to the small claims court and reclaim your costs (including the time that you've spent on the appeal etc). That would be what they deserved, since they neglected to maintain the bay markings properly, and then had the cheek to penalise you for their negligence.
Scan in the ticket, remove your personal details and post on PePiPoo. Also make sure you take some photos of the worn bay (in daylight if possible) as soon as you can, and in any case before you send in your initial appeal. If you follow the correct procedure (and you're telling us the full story) then I would say you were almost certain to eventually get your money back, and quite right too. Don't let them get away with their money-making scam! They rely on people in your sort of situation just paying up to make it go away, and all too often, people do just that. If everyone not only appealed, but took councils to the small claims court, they would stop routinely handing out unfair tickets on the basis that they had "nothing to lose". It's an appalling abuse of the system and here's your chance to show that you're not going to stand for it.
HTH.
_________________
Paul Smith: a legend.
"The freedom provided by the motor vehicle is not universally applauded, however: there are those who resent the loss of state control over individual choice that the car represents. Such people rarely admit their prejudices openly; instead, they make false or exaggerated claims about the adverse effects of road transport in order to justify calls for higher taxation or restrictions on mobility." (
Conservative Way Forward:
Stop The War Against Drivers)