When the Sleeper wakes (1899)

Graham is a man of his time, a radical, a pamphleteer and something of a prophet, a man in the 1890s pushing hard at the gates of the twentieth century. But he pushes himself too hard: he suffers from crippling insomnia, and when his body finally sinks into sleep he sleeps for two hundred years.
The world he wakes to is changed beyond all recognition. London -England- has 33 million people, television, video, aeroplanes, a wealth of new technology. Slowly the truth is revealed to him, and an awesome responsibility falls on his shoulders. He is master of the world, owner of half of it, and both rulers and ruled in his totalitarian nightmare act in his name.