HMS Portland shadowed the submarines after they surfaced separately off the coast of Norway.
A Royal Navy warship has tracked two Russian submarines in the North Sea.
British submarine hunter HMS Portland shadowed the vessels from Russia’s Northern Fleet after they surfaced separately, north west of Bergen, Norway.
The Navy said it tracked the pair as they travelled underwater south along the Norwegian coast from the Arctic.
It comes as the UK’s armed forces continue to train the Ukrainian military personnel.
HMS Portland reported on the movements of the Russian cruise missile submarine Severodvinsk and Akula-class attack submarine Vepr on Friday.
The Navy Type 23 frigate and its specialist Merlin helicopter are both equipped with cutting-edge sonars, sensors and torpedoes for submarine-hunting operations.
One of the RAF’s new long-range maritime patrol aircraft, the P8 Poseidon, also worked closely with HMS Portland to “hunt and track” the submarines, said a Navy spokesman.
The Ministry of Defence (MoD) does not usually comment publicly on specific submarine hunting exercises and it comes as Royal Navy sailors are training Ukrainian navy personnel in operating two Sandown-class minehunters which are to be sold to Ukraine.
Training is being provided by 1,000 UK service personnel for volunteer recruits with the aim of getting them ready for frontline combat.
Introduced into the Royal Navy in the late 80s, the Sandown-class minehunters specialise in finding and neutralising mines in deep waters.
UK armed forces minister James Heappey and Ukraine’s deputy defence minister Volodymyr Havrylov have visited the soldiers and sailors training on them in Scotland, the Ministry of Defence said.
Mr Heappey said: “The intensity with which the Ukrainian soldiers and sailors are training is something to behold.
“They work with the focus of troops who know they’ll be fighting in a war in just a few short weeks’ time.”