Parkingeye has issued a speculative invoice for £100 to you, the keeper,
Better ?
You're the keeper, not Lee Baron. I'd also maybe adopt a slightly less confrontational tone upon first contact, and strengthen as necessary down the line, but that might just be me.
How about this:
Dear Sirs,
I am writing regarding a Parking Charge Notice issued by your agent ParkingEye to me, the registered keeper of vehicle [VRM] at Ilford Lidl, land managed by Lee Baron. A copy of this notice is attached.
On the occasion the parking charge was issued, the driver of the vehicle was a customer of Lidl, and therefore a legitimate user of the car park. I have attached a receipt from Lidl confirming this. The charge was apparently issued because the vehicle returned within one hour, but ParkingEye have failed to provide any evidence that it was the same driver on both occasions, which would need to be the case for the alleged contravention to have occurred.
I am sure that when you hired ParkingEye, your intention as the managers of this land was to deter misuse of your car park, not to penalise legitimate customers of the retailers on your land, as has happened in this case. With that in mind, I kindly request that you instruct ParkingEye to cancel this unfair charge.
If ParkingEye continue to pursue the matter I will have no hesitation in defending my position, up to and including court if necessary, where Lee Baron may be held jointly and severally liable for the actions of their agent in any claim and/or counterclaim. I hope that it will not reach this stage, that common sense will prevail and the charge will be cancelled.
Yours faithfully,