Additionally, I did not receive the initial Notice to Owner, depriving me of the opportunity to pay at the discounted rate. It is unfair to penalise road users for a delivery failure beyond their control, especially because the initially offered discounted rate is not re-offered and that a delivery failure caused a debt recovery to be issued. Notice to Owners should be sent with signed or recorded delivery to prevent this unjust stress on road users."
Is nonsense, I'm afraid, I'd leave it out.
There was no 'opportunity to pay the discount' with a NTO. You had your chance with the initial PCN.
As regards how NTOs are served, this is by first-class post and not signed or recorded, after all if this was the case then motorists could just refuse to sign.