From servants' children who became clerks in Victorian Britain, to managers made redundant by the 2008 financial crash, travelling up or down the social ladder has been a fact of British life for more than a century. Drawing on hundreds of personal stories, this book tells the hidden history of how people have really experienced that social mobility - both upwards and down. It shows how a powerful elite on the top rungs have clung to their perch and prevented others ascending. It also introduces the unsung heroes who created more room at the top - among them adult educators, feminists and trade unionists, whose achievements unleashed the hidden talents of thousands of people.