The article is analyses the concept Stiff Upper Lip as a means of representing the category of politeness in English. The article descirbes linguocultural peculiarities of the concept, its correlation with other culturally significant concepts and its role in expressing the category of politeness in English. The article uses examples from the English fiction, newspaper articles and the author’s observations. Being one of the universal categories of communication, politeness is expressed by different means depending on national and cultural peculiarities. The lingvocultural concept Stiff Upper Lip is culturally significant concept for the Anglo-Saxon mentality. It is linked with such notions as emotional reserve, determination, and self-cont...