Doctor Who Files 2: Rose, by Jacqueline Rayner
Doctor Who Files 3: The Slitheen, by Jacqueline Rayner
Doctor Who Files 4: The Sycorax, by Jacqueline Rayner with a story by Stephen Cole
These four 50-page hardbacks, published very early in the Tennant era, originally retailed for £5.99 each. I got the lot for 99p plus postage from eBay, which is just about what they are really worth. They would be an interesting element (though a small one) in a study of the rhetorical practices of Who merchandising as exercised under the RTD regime (perhaps with a comparative element considering the precedents set by JNT and others). The first 30 pages of each book consists of reheated Who lore (almost entirely of the first year and a half of New Who) of greater or lesser relevance to the topic, based on the TV series (and for the Slitheen also incorporating elements from Stephen Cole's novel The Monsters Inside). The final section of each book has a short story, the two by Rayner being decidedly ordinary (the one in the Rose book is tediously educational on philately), but the two by Cole much better - his story at the end of the Sycorax book retells The Christmas Invasion from the monster's point of view, which is a welcome shift of perspective and carried off smoothly. But really, I'd hesitate even to recommend these to completists, unless you can pick them up as cheaply as I did.