The presented article analyzes the reaction of the British press to the proclamation of the Monroe Doctrine by the American president in 1823. The reaction of leading London periodicals such as The Examiner, The Monthly Magazine, The London Magazine and The Morning Post is considered. The author describes in detail the diversity of opinions: from support for Republican ideals and their contrast with the monarchical aspects of the policy of the Holy Alliance to expressing concerns about the negative impact of the doctrine on Britain's trade and economic interests in Latin America. The author concludes that the London newspapers have a balanced, albeit emotional assessment of the influence of the Monroe Doctrine on international relations and the specific interests of Great Britain. The article focuses on the period of the 1820s and the British reaction to American foreign policy activity, neglecting to consider the British position in the context of the War of Independence of the Spanish colonies of 1808-1819. In the study of newspaper materials by domestic and foreign scientists, general philosophical (deduction and induction, systematic approach, synergetic approach, etc.), general scientific (observation, comparative method, etc.) and private scientific methods specific to a particular field of knowledge. The Monroe Doctrine provides a rare example of a 200-year-old speech that remains the subject of regular references when discussing the current international political agenda to this day. The article examines the reaction to the Monroe Doctrine, which is one of the fundamental documents of American public policy, which became one of the first steps for the formation of American strategic culture in its current state. The relevance of the article is based on the need for a comprehensive study of the reports of the leading London press to identify their impact on international relations and the specific interests of the United Kingdom. Despite the fact that the Monroe Doctrine has been around for two hundred years, it does not lose its relevance in relation to Latin American states with the United States, and, more importantly, in relation to the United States, with other actors in world politics.