In the Christmas Special "Party Games", when we see the stack of newspapers near the end of the episode, "The Guardian" is misspelled as "The Gaurdian". [The Guardian is well known for typos (being referred to by Private Eye as the Grauniad). This was a joke.]

At the start, Hacker's driver says that the hospital has 500 administrators. Just afterwards, Bernard tells Hacker that the correct figure is 340. Then for the rest of the episode, the figure goes back to 500. [Wrong. Bernard tells Hacker there are 342 *administrators*, and adds that there are a further 170 *ancillary staff*. That adds up to 512, which rounds down to 500. Whenever anyone refers to the staff for the rest of the episode they simply refer to the *workers*, meaning the total staff.]

Throughout this episode, Sir Humphrey is worried about a slip-up he made 30 years earlier being discovered when the files are released under the Thirty Year Rule. Hacker gets Humphrey to admit the fault was his, then agrees to help him cover it up. At this point Humphrey produces a document which basically allows them to empty all the embarassing papers out of the file and leave it empty. The plot hole is: Why was Humphrey so worried about being found out? He didn't need Hacker's help to avoid being discovered. He could have emptied the file without Hacker's knowledge and there's no way anyone could have known. Humphrey even stated it was normal practice for files to be emptied to avoid embarassment, so it would have been nothing out of the ordinary anyway. This would have actually worked out better for both men, as any inquiry would have drawn a blank, leaving Humphrey in the clear, and Hacker would have been able to honestly deny any complicity or knowledge of a cover up. In previous and future episodes, Sir Humphrey is more than clever and devious enough to cover up his own mistakes, even minor ones. It makes it a plot hole that his biggest blunder worries him so much when he had a solution all along. [Did you actually watch this episode? An important plot device is that the file lands on Hacker's desk BEFORE Humphrey has a chance to get rid of the evidence, and while Hacker has no intention of releasing the information he is going to use it to make Humphrey squirm while he has the chance. It's all about one-upmanship between the two men, a consistent theme in the show.]