Instructor #2 did a walk round at Le Touquet and a visual check on the fuel levels, but did not replace the cap on the port wing properly. I noticed it in flight
How strange. Nothing of the sort could ever have happened to me during my training, as the pre flight checklist was always done by the student, ie me. And checking that the caps are on right is a separate checklist item that you do some time after checking the fuel.
Do other people rely on instructors to check out aircraft?