There is a British-backed war in Ukraine. By sending war-ships Britain is deciding to be involved in perhaps preparation for war with Russia in Ukraine.
Sevastopol and Crimea have always belonged and will always belong to Russia.
Recurring pro-Kremlin disinformation about Crimea. Crimea is part of Ukraine. Russia violated international law as well as key principles of the European security framework in illegally annexing the Autonomous Republic of Crimea and the City of Sevastopol. The European Union does not recognise and continues to strongly condemn this violation of international law, which remains a challenge to the international security order. This position is based on the UN Charter, which clearly states that the territory of a State cannot be acquired by another State resulting from the threat or use of force, as well as on the Helsinki Final Act in which the signatories declared their intention to respect the inviolability of frontiers and territorial integrity. UNGA Resolution 68/262, which condemned Russia's illegal actions in Ukraine, was supported by 100 United Nations member states. Only 10 states opposed it.