Peel is a continuity obsessed fanboy, and that's fine, but there's a time and place for it. I don't normally mind authors expanding the worlds in which the original stories were set, but this is really pissing me off. The story doesn't need all this retconning, it only needs minimal background, but in the prologue alone Peel manages to tie in with Frontier in Space, Daleks' Master Plan, and Genesis of the Daleks.
The only bit that fits is later when the Doctor is thinking about his past self, who is busy on the other side of London. Given it relates directly to Ben and Polly leaving, it's a fair addition to make.
Then he manages to get the details of the Chameleon's plan from The Faceless Ones arse about, talking about their plan to invade Earth, when their actual plan was to abduct 50,000 humans and leave.
I dunno, maybe I'm just being too harsh. Or maybe I'm right to be angry that I'm being inundated by dodgy continuity by an author who manages, on the second page, to misspell the name of the Dalek home-world as Skarao.