The navy's 'unbroken watch' on Russian ships in UK waters comes as British troops also take a robust stance on the Kremlin's shadow fleet, seizing a tanker earlier this month.

Five navy ships have been involved in the monitoring of the Admiral Grigorovich

The navy's 'unbroken watch' on Russian ships in UK waters comes as British troops also take a robust stance on the Kremlin's shadow fleet, seizing a tanker earlier this month.