The article covers the role the Great Britain has played as a fourth independent political actor of international relations, along with the U.S., EU and NATO, in the political crisis in Ukraine from its very beginning (2014), and in finding quick and effective ways of solving it. The article also explores the worsening of the bilateral relationship between UK and Russia under the influence of the 2014–2015 Ukrainian crisis, in a wide context of antagonism between the U.S. and Russia. There are several factors introduced in the article which hampered the crisis from the start and which still can be used to improve the bilateral relations in the nearest future. The author scrutinizes the evolution of the Britain's stance on the Ukrainian upheaval at the beginning of 2014, the Crimea annexation/joining perceived as a violation of the international law, Russia's interference in the conflict in the Eastern territories of Ukraine, and the imposing of sever EU and U.S. sanctions against Russia. The article highlights the influence of the Ukrainian crisis on the strengthening of Anglo-American “special relations” and on the revival of the NATO strategic role as a tool to confront Russia not only in this conflict, but also on the world stage. The author tries to assess the scope of damage for the UK–Russia relationship made by the Ukrainian crisis and answer the questions: where has British participation in this crisis boosted the Great Britain's world standing, when can the UK–Russia relations become better again, and what can help improve the relationship between two countries?