Please post up the original PCN if you want proper advice.
I've posted both sides of the PCN again which should hopefully be clearer. Thanks.
Was the driver revealed in any appeal?
No, only referred to in the third person.
Perfect.
So all you can do now is sit and wait.
In my opinion the NtK is not compliant as it does not meet all requirements of PoFA Schedule 4 Paragraph 9(2).
This is now the long game.
Ignore begging debt letters.
Come back for further advice once you get a Letter Before Claim.