Also they have a further 2 parts (copied below).
WOuld you advise me to leave them blank or add my version of events? i.e. Returned to the vehicle, saw the warden standing close by but since no PCN had been attached to my vehicle I drove away. Sometime later, I received a NTO in the post which I appealed on the basis that no PCN had been issued prior to the NTO. The Parking authority rejected by appeal but offered no evidence for serving the PCN.
1. Explain your appeal
Be as specific as you can, please include dates, times and locations where possible (3000 word limit). If you wish to add a longer explanation you may do so by uploading it as evidence (see below).
2. Add your evidence
Adding evidence to your appeal can be helpful to support your case, although you are not required to do so.
Evidence that may be helpful could include:
pay-and-display tickets
photographs
correspondence
letters / statements from witnesses
proof of vehicle ownership (such as DVLA records or sales receipts)
invoices or delivery notes (to show loading while using your vehicle)
permits or vouchers
a copy of a Blue Badge
Neither form of evidence is necessarily better than the other.
Given the nature of the Tribunal process, please be aware that any evidence uploaded by either party (i.e. you or the Authority) can be seen by the other.
So, if you decide to upload evidence of a personal nature, please ensure you remove or hide any information you do not wish to be seen by the Authority.
If uploading a bank account statement, for example, this could mean removing or hiding your sort code / account number; or for medical records, this could mean removing your National Insurance Number.
If you do not have evidence to hand right now, you are able to upload it to your case file at a later date.