Interior door locks in 19th century

[eschaton37]

Would interior doors -- bedroom doors, bathroom doors etc. -- of a middle-to-upper-class house in Victorian England have locks? (Specifically, the counties of Surrey and East Sussex in the 1850s, if it matters.)

(Attempted Googles: door locks 1800s, door locks victorian era, interior door locks 1800s, interior door locks victorian era)