What a thoroughly disappointing book! I expected much better from Oxford.
Just a few of the problems I found (in contents):
(1) It completely skips the Edwardian Era (1900-1914) though it's called "Twentieth-century Britain"
(2) It has a tendency to say "how horrible things were" only to then say "but not all that bad!" (It does this several times)
(3) It is VERY thin on society and people's lives and struggles, focusing on political highlights and major historical points.
(4) It goes into far too much depth about arts, but only perceived "fine arts" like literature, theater, movies, later BBC... It completely skipped the rise of Fantasy and such (how can it completely ignore the presence of Tolkien and Lewis? Surely it could have mentioned Lewis in his war-time role as an apologist!)
(5) It seems to take at least 2 digs at Churchill, and for what reason?
(6) It suddenly mentions a movie like "Trainspotting" as if to prove a point as to how bad the drug culture was...
(7) It spends FAR too little time discussing what happened in WWI and WWII and what it meant for the British people.
In short, I get the impression that the author has a personal interest in the arts and literature of the 20th century (and thus the inordinate amount of space dedicated to them) and has something personally against Churchill (thus the apparent digs... one even counter to Churchill's personality).
So, in my opinion, I'd say "buyer beware"... make sure you check out a sample or look at other people's reviews. Personally, I think Wikipedia would have been better than this.