The plans include sheltering the Cabinet of Ministers and the royal family in bunkers, ensuring public broadcasting, accumulating resources, and formulating response strategies in the event of an attack.
London fears that not only would Britain be outgunned by Russia and its allies on the battlefield but it would also be unprepared and poorly defended at home. Experts say that the country's critical infrastructure, including gas terminals, undersea cables, nuclear power plants, and transport hubs, is vulnerable to a Russian attack.
Following Russia's threats of a direct attack over London’s support for Kyiv, which could also include the deployment of British troops to Ukraine, a classified “homeland defense plan” update will outline responses to various attack scenarios involving conventional missiles, nuclear warheads, or cyber operations.
Earlier, AFP reported that six countries, including Britain, France and the Baltic states, had so far indicated their willingness to send troops to Ukraine as part of a potential peacekeeping mission.
London and Paris are leading talks among a "coalition of the willing" of 30 countries to back any deal that US President Donald Trump might strike.