...that could have been sooo easily avoided!
I usually like when Non-Germans use German words, a) that's really cute and b) since I like the language I'm happy when others like it, too. I know it's not the easiest of all languages, having "der", "die" and "das" instead of only "the". But if you write an official BBC-Doctor-Who-look-it-is-printed-and-sold-worldwide book you really could ask someone if spelling and grammar are ok, couldn't you? Since I had the audiobook, I don't know about the spelling, but "the glamour" is not "die Glanz" but "der Glanz" (you could have easily looked that up in any dictionary) and if you say something like "getting hold of the glamour" you would even have to say "getting hold of den Glanz", never "die Glanz".
BUT, nevertheless, it is a highly enjoyable story with a very twelve-ish Doctor and a very interesting bunch of companions (I didn't know Bernice Summerfield, I'm still in the 1960s concerning the Classic Who), and it was perfectly read.