The article deals with the concept of «splendid isolation», traditionally associated with British foreign policy in the late 19th century, refers to the period when Britain distanced itself from European alliances. This article examines the rationale and consequences of this policy through a contemporary lens, drawing on contemporary scholarship to reassess the motivations and outcomes of Britain's diplomatic posture in that era. Analyzing the concept of «splendid isolation», the study focuses on the political, economic and military factors that determined British strategy. The focus of the study is also the analysis of criticism of this strategy and its consequences for Great Britain in the context of changes in the international balance of power at the beginning of the 20th century. The question arises as to whether «splendid isolation» was really an effective strategy for protecting national interests and maintaining the status of a world power. The traditional view of British foreign policy in the late Victorian era emphasizes independence and avoidance of binding alliances. The article examines the changes in the international environment, especially the growing competition from France, Russia, Germany and the United States, and how they influenced the decisions of British politicians. The article also examines the transition from isolationist policies to strategic alliances at the beginning of the 20th century.