Three Royal Navy warships have been on a concerted operation shadowing a Russian Navy task force in waters close to the UK. Type 23 frigates HMS Westminster, HMS Lancaster and HMS Richmond tracked Slava-class cruiser, Marshal Ustinov - the sister ship of the ill-fated Moskva which sunk in the Black Sea in April - and Udaloy-class destroyer, Vice-Admiral Kulakov, plus their tanker Vyazma. The British ships tracked the Russian task group as they made their journey home from the eastern Mediterranean after supporting Russia's unprovoked invasion of Ukraine since February. The frigates and their helicopters used an array of cutting-edge sensors and modern naval technology to keep close watch in the Celtic Sea and through the English Channel.