As pointed out, this is an alleged contravention in Scotland and so there is no Keeper liability. As it is a Notice to Driver (NtD), do not appeal it yet.
Under no circumstances does the Keeper identify the driver to ECP. There is no legal obligation to do so to an unregulated private parking company.
When the time comes to appeal it, you do so ONLY as the Keeper (assuming you are). You only reference the driver in the third person. No blabbing with silly things like "I did this or that". Only "the driver idi this or that".
You should submit an appeal, only as the Keeper, on Wednesday 28th May. No earlier and certainly no later than Thursday 29th May. However, make sure that you state in it that your address for service is your Scottish residential address.
There is a double reason for this. First is to see if ECP respond to the appeal without issuing a Notice to Keeper (NtK) and the second is if they do apply to the DVLA fr your Keeper data after having already provided them with your name and address in the appeal, they will be in breach of the KADOE contract with the DVLA and will have requested your DVLA data unlawfully. This can be followed up with a formal complaint to the DSVLA about ECP which will cause them discomfort and puts them at risk of having their DVLA access removed.
Here is the suggested appeal:
I am the registered Keeper of the vehicle referenced in your Parking Charge Notice [PCN number], issued as a Notice to Driver (NtD).
This appeal is made by the Keeper only. The alleged contravention occurred in Scotland, and as such, Schedule 4 of the Protection of Freedoms Act 2012 (PoFA) does not apply. There can be no Keeper liability under that legislation for any incident that took place in Scotland.
There will be no admission as to who was driving and no inference or assumptions can be drawn. Fore your records, my Keeper details are as follows:
[Full Name]
[Full Address]
The registered keeper cannot be presumed or inferred to have been the driver, nor pursued under some twisted interpretation of the law of agency. Your NtK can only hold the driver liable. ECP have no hope at POPLA, so you are urged to save us both a complete waste of time and cancel the PCN.