Julian Barnes has regularly turned out novels breaching the boundaries between fiction and essay, lolling around in ideas and dissecting them as an essayist would but through the machinations of plot.
The genius of the man lies in the fact that despite his leanings towards the essay his works exist as fully-fledged fictional works. He is arguably the greatest English novelist of the past twenty years and has a much more natural handling of the vagaries of plot and character than most of his contemporaries.
In 'England, England' he takes on the idea of utopia/dystopia but with his usual comic touch. The plot revolves around a businessman's attempts to seal his legacy by creating a sort of mini-England on the Isle of Wight. The island holds everything that foreigners think constitutes England, from Robin Hood to Fish and Chips and even a robin in the snow, and serves as a kind of amusement park come tourist haven, enabling people to experience the breadth of English history and geography in a matter of days.
In terms of ideas Barnes covers capitalism, the real vs the imitation, British tabloids, love, sex and fetishism.
It's one of his more unconventional novels and I probably wouldn't recommend it for a first time reader of Barnes (try 'Talking It Over' instead), but it is probably the novel of his that will be looked at most in academic circles and on university courses and will be read alongside '1984' and 'Brave New World' in the future as a study of utopias/dystopias.