The sign and markings were in place as required at the time of the contravention.
With respect, the rest is hearsay. Yes, the OP can question the council as regards when the markings and sign were installed, but what's the end game here?
OP, some fundamentals pl:
Are you the registered keeper of the vehicle with current DVLA details;
Do you live in this section of Moor Road(you raised the question of why no notice and clearly do not have a resident's permit)?