Can you post a GSV link that gives those views, because I couldn't find anything when I last looked.
Your photos show clear restriction signs that presumbly you ignored and just drove past, plus an advance sign indicating the restriction ahead, which again, you would seem to have missed. Frankly you seem to have no grounds against the contravention itself as far as I can see. However, we encourage OPs to submit reps because sometimes the council shoot themselves in the foot in their reply, giving solid grounds based on mismanagement of the enforcement process.