When William Came

We have had many novels about alternate histories, often of the 'What would have happened if Hitler had won the war' type and this is another - except that this one is set in 1913 and the 'William' of the title is that old bogeyman 'Kaiser Bill'. For some reason, at the height of Britain's power, the fear of invasion was common at that time. (See The Riddle of the Sands, The Battle of Dorking, Spies of the Kaiser or even The War of the Worlds)
WARNING: Contains mild anti-semitism and jingoism typical of the period. (Summary by Andy Minter)