A Russian warship fired warning shots after a UK-registered yacht came near it in the English Channel on Tuesday, marking the latest sign of rising tensions between the UK and Moscow.
The incident, at around 11.40am on Tuesday, is understood to have involved the Kremlin frigate Admiral Grigorovich in international waters between the Isle of Wight and Normandy.
It comes just days after Royal Marine commandos and officers from the National Crime Agency boarded the sanctioned Russian shadow fleet tanker Smyrtos in the channel.
Authorities were alerted when a UK-registered yacht alleged that the warship fired warning shots nearby at a distance of approximately 500 yards (457m).
It happened around 20 nautical miles south of the Isle of Wight, outside UK territorial waters, and caused no injuries or damage.
As Russian warships are routinely shadowed by the Royal Navy when they pass through the English Channel, the offshore patrol vessel HMS Mersey was monitoring the frigate.
A seaboat from HMS Tyne, another patrol vessel, was sent to the yacht to gather information and check on the safety of the crew.
The Conservatives said the incident was “hugely concerning” and showed “yet again, that Russia poses a direct threat to our nation.”
James Cartlidge, the shadow defence secretary, said: “In the last three days we have seen a Russian Shadow Fleet tanker seized, Russian agents exposed at the heart of an attack on the prime minister and now we have reports of shots fired by a Russian frigate at a civilian yacht in the Channel.
“This shows, yet again, that Russia poses a direct threat to our nation, and underlines why it is critical for Labour to get a grip on defence after the chaos of their Ministerial resignations last week. Above all, this news shows why reports of Labour planning to make further cuts to defence are so shocking.”
It came on the same day the captain of the Smyrtos appeared in court charged with breaching sanctions. The Russian shadow fleet vessel was carrying 98,000 tonnes of oil when it was intercepted by British troops.
Ajay Pant, an Indian national, has been charged with directly or indirectly supplying or delivering by ship prohibited oil or oil products from Russia to a third country, in contravention of strict sanctions.
He has been remanded in custody.
The court heard that the oil tanker was part of Russia’s “clandestine fleet of 700 ships”, which acted as its “lifeline” by transporting 75 per cent of its oil and helping fund the war against Ukraine.
The move to seize the tanker was the first UK-led operation to capture a sanctioned vessel, and it has since been formally prevented from leaving the UK.
Ministers announced also new laws last month designed to crack down on Russian interference, warning saboteurs that if they deliberately damage vital undersea internet cables around Britain, they will face jail.
The penalty for interfering with communications cables currently carries fines of just £1,000, unless prosecutors can prove the action was on behalf of a foreign power, which can be punished with a prison sentence.
But Liz Lloyd, the digital economy minister, said in a speech in central London that ministers would “make the law clearer, tougher, and much harder to evade, sending a clear message that if you act recklessly or if you deliberately target our cables, there will be serious consequences.”
The move is designed to act as a deterrent to protect the undersea fibre-optic cables, which are responsible for 99 per cent of the world’s digital communications and perform an essential role in commercial, government and military operations by securely transmitting information.
At the time, Baroness Lloyd said the UK’s message to Putin was simple: “We can see what you are doing and any interference will have serious consequences.”
The three-and-a-half-thousand tonne Admiral Grigorovich, a Black Sea fleet frigate, has been shadowed by the Royal Navy on a few occasions as it passes through the English Channel.
In April, it was reported that it accompanied two shadow fleet vessels along England’s southern coast, while British tanker RFA Tideforce followed behind.
The 125-metre-long RFN ship is based at Sevastopol, a major port city in Russian-occupied Crimea.
Admiral Grigorovich has eight vertical launch cells for cruise missiles, which can be used against ships or ground targets.
It also has an A-190 Arsenal naval gun and a hangar and helipad for a military helicopter.