Hi,
On 26th April the driver parked in the Waitrose car park, ran some errands in town, did some shopping in Waitrose and left. The driver didn't notice the signage.
On 16th May the below PCN was received by the RK:


The RK then appealed on the Britannia site with the following:
"Dear Sirs,
I have received your Parking Charge Notice (Ref: ______) for vehicle registration mark _______, in which you allege that the driver has incurred a parking charge. I note from your correspondence that you are not seeking to hold me liable as the registered keeper, under Schedule 4 of the Protection of Freedoms Act 2012. There is no obligation for me to name the driver and I will not be doing so. I am therefore unable to help you further with this matter, and look forward to your confirmation that the charge has been cancelled. If you choose to decline this appeal, you must issue a POPLA code.
Yours,"
The RK then submitted an appeal 19th May on the Britannia website, being careful not to tick any boxes that might identify the driver.
The RK received an appeal-reply dated 11th June (below) which is again asking for the RK to provide details of the driver.


What should the RK do next?