Picked this up on impulse from Forbidden Planet the other week. It's part of a special BBC series - the only Doctor Who title among them, as far as I can tell - for "people who either don't have much time to devote to reading or who have perhaps never been bitten by the reading bug". So I am not in the target audience then.
So, an odd mix of relatively simple language and large print, with relatively adult themes (implied sex, graphic exterminations). I have no idea if it will really succeed in popularising literacy. It's quite a good read, starting with a strange find on a Roman archaeological dig and continuing with the horrors of aliens in contemporary England. As a Doctor Who story, it adds a certain amount to our understanding of Daleks, picking up both on the Ninth Doctor's first encounter and, I thought, also on the Second Doctor's last encounter with them. Purists may wonder about the role played by the Tardis as an agent of adventure.