 When Bridget is having dinner with Shazza, Jude and Tom and asks what they  would do if their employee did a "harmless little mistake like that" we are  led to believe that shes referring to the F.R. Leavis incident. But in one  of the scenes that were cut it shows Bridget (on the same day) pitching a  marketing idea to one of their writers, the only problem is that she mistakes  Michael Naughton the author of "Teddy knows best" for Michael Harper the  author of "The red door". This is more likely to be what shes referring to.