You don't have to say the Keeper wasn't driving the car!!! You, the Keeper, are under no legal obligation to identify the driver to an unregulated private firm, irrespective of whether it was the Keeper or anyone else. Get that into your head first of all!
You simply refer to the driver in the third person at all times and in any communications. No "I did this or that". Only "the driver did this or that"!!!!
Understood?