Montmorency

Summary: In Victorian London, when a petty thief falls through a glass roof trying to escape from the police, what should have been his death marks the beginning of a whole new life. After his broken body is reconstructed, he adopts a dual existence as both a respectable, wealthy gentleman named Montmorency, and his degenerate servant Scarper. But he must always be on guard - the smallest mistake could reveal his secret and ruin both his lives
"The Nestle Smarties Book Prize Silver Award winner"--Back cover