WARNING! THERE MAY BE UNMARKED SPOILERS!
- Accent Depundent: Fitz's attempted joke about a fairy getting her dentures from "the National Elf Service" in Grimm Reality works better in a Norf London accent.
- Creator's Pest: According to editor Stephen Cole, none of the writers liked Sam Jones. So much that they were always trying to kill her off. (Or, in Kate Orman and Jonathan Blum's case, make her a fully rounded character.)
- Development Gag: In Unnatural History, Daniel Joyce is a Berkeley professor whose surname is a reference to James Joyce, writer of Ulysses. Robert DeLaurentis' rejected script for a Who film has Ulysses, the Doctor's father, living on Earth as a Berkeley professor. Is Joyce the Doctor's father? Per Jonathan Blum, it's deliberately open (which is fitting, given the book) - maybe he is, maybe he isn't, and hopefully he's an interesting character regardless of which one you go with.
- Exiled from Continuity: In "The Night of the Doctor", as he prepares to regenerate, the Eighth Doctor name-drops his past companions... specifically his Big Finish companions, leaving Sam, Fitz, etc. in the lurch. (Though Fitz does get mention in the novelisation).
- Keep Circulating the Tapes: The EDAs are long since out of print. If you're looking for physical copies of the books, prepare to be on eBay. All the novels are available to download for free somewhere out there as PDFs. However, the BBC reissued a crop of a few of them at the end of August 2011.
- Money, Dear Boy: Lawrence Miles has mentioned at least once that he wrote The Adventuress of Henrietta Street so he could buy Legos. The man likes his Legos.
- Mid-Development Genre Shift: War of the Daleks started out as a television story. When the series was cancelled, it became a novel and was originally written for the Doctor Who New Adventures.
- Troubled Production: The books were initally edited by a woman who knew nothing about Doctor Who. The top writers on the Doctor Who New Adventures were recruited and then told they couldn't do the stuff that had worked before because BBC Books wanted the ED As to be distinct from the Virgin line. And when one of their writers did come up with a truly original idea that could have established a direction for the line, the lack of actual discussion between the writers as to what to do with it meant he took his ball and went home when other authors went in a different direction. When Justin Richards took over as editor, pretty much all he could do was torch the franchise and start over, and even that didn't really work. Then, just as the line seemed like it was finally starting to come into its own, the BBC ordered it (and the Past Doctor Adventures) scrapped so as not to distract from the 2005 relaunch of the show. While fans were willing to put up with the faults of the books due to the comparative lack of any other Doctor Who related material in those years, they've since come to be seen (fairly or otherwise) as the poor relations of the Big Finish audio stories.
- What Could Have Been: The villains from the second major arc of the series, Sabbath's allies, were originally meant to be the Daleks, reappearing after 52 books and 6 years absence. The Council of Eight was a last minute replacement, meaning some of the clues as to their identity ended being a bit misleading.
