The article deals with transferred meanings of the nouns denoting subjects of professional activity (zhandarm, lavochnik, myasnik, soldat, axeman, executioner, slave-driver, sportsman, etc.) in Russian and English political communication. Research material was selected from the National Russian Corpus and the Oxford English Corpus. Special attention is paid in the article to the identification and modeling of the structure of knowledge lying at the basis of metaphorization. The analysis of the sample has shown that the following semantic subspheres within the sphere “Professional Activity” regularly serve as sources of metaphorization in political communication: supervision and investigation; military service and sport; witchcraft and magic, commerce and finance. The Russian and the English languages display a similarity between the regular features of metaphorization in the given semantic groups. The presence of a pejorative component in the transferred meanings of lexemes nominating workers of law enforcing and punitive bodies, as well as those associated with cruelty and violence (meat and wood purveyance), is typical of both Russian and English political communication. Metaphorization of lexemes is regularly employed by the military and sport spheres, and the focus is placed on the stereotypical positive personality traits of military men and sportsmen (military men are presented as noble, courageous, self-sacrificing, loyal people; sportsmen nominations are used to denote honest politicians who abide by the rules of the game and know how to lose). In both languages, the metaphors from the sphere of commerce regularly include a negative evaluative component, but the reasons for the negative evaluation may be different: in English, the nominations of traders serve to denote politicians who are engaged in dissemination and propaganda of something unpleasant and dangerous; in Russian, the accent is placed on the personal traits of the seller, which allows creating nominations of greedy officials ready to do anything for personal gain and willfully using something for their own personal profit. The transferred meanings of the lexemes from the semantic subsphere “Witchcraft and Magic” show that the character of the evaluative component of metaphors in political discourse (negative: the metaphors are used to denote rogues and deceivers) may not correspond to the type of evaluation in other kinds of communication (positive evaluation associated with reference to outstanding abilities is quite frequent).