What is the author's style in Master Georgie by Beryl Bainbridge?

This is a work of historical fiction. It takes place in Liverpool, England, and in the Crimean peninsula in the Black Sea during the Crimean War. The war being fought was between Imperial Russia on one side, and an alliance of Great Britain, France, Sardinia and part of the Ottoman Empire on the other. The main characters are British citizens of Queen Victoria's England, a class-conscious society.