This site will help you immerse in twentieth century UK history with books

 Second World War influenced greatly the ideological and economic life of Britain. 

 During the war Great Britain suffered heavy financial losses. The post-war program of the Labour Party became the only hope for a better future for the British people. It promised to do away with unemployment, to improve living conditions, to level out prices. Great attention in the program was paid to cooperation with the Soviet Union. So the elections of 1945 brought defeat to the Conservatives and ensured victory to the Labour Party. 

Very soon, however, the British people saw that the policy of the labour leaders did not differ much from that of their predecessors. From 1946 Great Britain faced strong resistance on the part of the oppressed people of India and Egypt. Great Britain was losing one colony after another: independence was achieved by India, Burma and Ceylon. 

The failure of the Labour Government that promised a lot and did nothing, Cold War and the atomic threat, the rapid intensification of the cultural and moral crisis — these were the factors in the 50s—60s which influenced the minds of the British people, particularly the intellectuals, and caused their disillusionment.

Most popular post-war British books
Reading these books will help you understand the history of post-war Britain better, especially with knowledge of a small historical reference presented below. 
Saturday night and Sunday morning, Alan Sillitoe (1958)
 It is a skilful portrayal of what it was to be a young working class man in 1950s Britain.The post-war period during which the novel is set saw the end of rationing and with plenty of jobs, and unprecedented levels of prosperity for the working classes,  amongst those that had seen the war.
Lucky Jim, Kingsley Amis (1954)

Jim Dixon is a cynical history lecturer struggling to fit into the stuffy atmosphere of an unnamed English university. As Jim hopes for a spell of good luck, misfortunes continue to befall him. This biting satire on the pretensions of class and Britain's strict class system remains widely read. 
1984, George Orwell (1949) 

1984 is a warning after years of brooding on the twin menaces of Nazism and Stalinism. Its depiction of a state where daring to think differently is rewarded with torture. Winston is the symbol of the values of civilized life, and his defeat is a poignant reminder of such values in the midst of all-powerful states.
A Clockwork Orange, Anthony Burgess (1962)

Set in a dismal dystopian England , it is the first-person account of a juvenile delinquent who undergoes state-sponsored psychological rehabilitation for his aberrant behaviour. The novel satirizes extreme political systems that are based on opposing models of the perfectibility of humanity. Written in a futuristic slang  vocabulary invented by Burgess.
Movement "Angry Young Men"
Most popular British literature movement of 20th century

Angry Young Men, various British novelists and playwrights who emerged in the 1950s and expressed scorn and disaffection with the established sociopolitical order of their country. Their impatience and resentment were especially aroused by what they perceived as the hypocrisy and mediocrity of the upper and middle classes.
The Angry Young Men were a new breed of intellectuals  who were mostly of working class or of lower middle-class origin. Some had been educated at the postwar red-brick universities at the state’s expense, though a few were from Oxford . They shared an outspoken irreverence for the British class system, its traditional network of pedigreed families, and the elitist Oxford and Cambridge universities.They showed an equally uninhibited disdain for the drabness of the postwar welfare state, and their writings frequently expressed raw anger and frustration as the postwar reforms failed to meet exalted aspirations  for genuine change.  The trend that was evident in John Wain (1954) by Kingsley Amis, which became the representative work of the movement

Among the other writers embraced in the term are the novelists John Braine  (Room at the Top, 1957) and Alan Sillitoe  and the playwrights Bernard Kops (The Hamlet of Stepney Green, 1956) and Arnold Wesker (Chicken Soup with Barley, 1958). Like that of the Beat movement in the United States , the impetus of the Angry Young Men was exhausted in the early 1960s.

Most popular British 20th century authors 
Get acquainted with their books 
William Golding, (born September 19, 1911, St. Columb Minor, Cornwall , England—died June 19, 1993) English novelist who in 1983 won the Nobel Prize for Literature for his parables  of the human condition. He attracted a cult of followers, especially among the youth of the post-World War II  generation.
George Orwell, pseudonym of Eric Arthur Blair, (born June 25, 1903, Bengal, India—died 1950, London), English novelist, essayist, and critic famous for his novels Animal Farm  (1945) and Nineteen Eighty-four  (1949), the latter a profound anti-utopian novel that examines the dangers of totalitarian  rule.
Anthony Burgess, also called Joseph Kell, original name John Anthony Burgess Wilson, (born February 25, 1917, Manchester , England—died November 22, 1993, London), English novelist, critic, and man of letters whose fictional explorations of modern dilemmas combine wit, moral  earnestness, and a note of the bizarre.