This article examines the update of ideological foundations of the largest right-wing radical party in Britain (and in the whole of Europe) - the United Kingdom Independence Party (UKIP). The subject of the research is the partys programmatic text, Manifesto for Brexit and Beyond, a document that is not limited to the discussion of Brexit alone. This document appeared at the end of 2019 and, despite the frequent change of leadership in the party during 2020, remained the ideological foundation of the organization after Brexit. The aim of the article is to analyze how the ideological base of the right-wing British radical party was formed in the socio-political realities of the initial period after the states exit from the European Union. The paper presents a discursive analysis of the main ideological document of one of UKIP, as well as identifies the ideological positions of British right-wing radicals at the present stage. Since the research is mainly practice-oriented, the main results are presented the data obtained through discourse analysis using to the method of R. Wodak. The data testify the changes that have been taking place in the discourse of the extreme right in Britain in recent years, as well as the prospects for its evolution in the coming years after Brexit. Studying UKIPs discourse, the author concludes that it forms depending on the political, social and cultural conditions that prevail in modern British society, as well as on the general European context. The article also shows how a modern right-wing radical party constructs its discourse using the most painful issues for the society within the framework of political struggle.