Posh is an adjective used to describe people who are upper class or high class. In many cases the most revealing clues are linguistic ones like speech patterns, accent and choice of words. I don't believe that being posh is automatically a good or bad thing - it's not fair to make generalisations about everyone. We'll learn details about upper-class society in the UK,. what makes a person truly posh or not, how posh people really speak  and you'll learn more about some famous UK celebrities.