Well, for the annual services, etc, every time they work on the car, we get an itemised report / receipt, which is then slipped into the log book ~ and they also stamp the service record.

Each MOT results in a report and a certificate ~ so they go in, too.

That way, we know exactly what has been done, when and by whom ~ and we can prove that we are driving a safe, legal car.
_________________________
"The secret of success is constancy to purpose" - Benjamin Disraeli.