I have gone for the simplified version and submitted a challenge.
Did you write
O/S 85 Derwent Road or just plain
Derwent Road in your challenge?
I am leaning towards paying the reduced fine.[/i]
I sympathise with your quandary.
On the one hand, there is the wrong location and the fact that in rejecting there is a a 'failure to consider' the specific point you made about location.
On the other, an adjudicator might judtifiably consider, in light of the fact that the vehicle
was parked on DYL in Derwent Road, that the foregoing points were
de minimis and refuse your appeal.
The 'double or quits' gamble has become a lot more serious since the huge increase in London penalty charges. I do not know if Enfield is still a London Borough that routinely re-offers the discount if it rejects reps against the NtO.
At the moment, I'd be inclined to payment, but see what others say.