What is the author's style in The Bottle Factory Outing by Beryl Bainbridge?

The language used throughout the book is quite simple to illustrate the simple lives of the factory workers. The author points out times when Brenda speaks in Patrick's dialect, which appalls Freda. There is no cursing in the book. The dialogue between the characters is always direct and to the point; the only character that sometimes blabbers on and on is Freda.