I did a Mechanical Engineering course at what was then North Staffs Poly. There was a tradition of trying to get the administration to record fake students. One of the lads had an older brother who had been there, so he knew about all this and was prepared. It was a 'sandwich course, so we all had "sponsors" as they called them, and this employment would be noted, as each lecturer took your details at the start.
He mentioned that there was a lad who was not there at the time, which was fairly plausible and was asked if he knew much about him. He said that he thought his name was Eric Worthington and he worked for Bass in Burton. They spotted Worthington E as soon as they wrote it down, of course.
But they didn't spot Dick Marsh, who was supposed to work from BREL in Derby, where another lad, who didn't turn up all the time, also did. Eventually, they got fed up of this Dick Marsh, who seemed to never turn up much and wrote to Derby to complain about him.
A couple of weeks later, they got a reply from Sir Richard Marsh, Chairman of the British Rail Board, apologising and saying that he'd been a bit busy.