The Ministry of Defence (MOD) has said two RAF fighter jets were scrambled earlier on Friday to intercept two Russian bombers.
In a statement, the MOD said the Quick Reaction Alert (QRA) Typhoons were scrambled "against unidentified aircraft approaching the UK area of interest".
"Subsequently we intercepted and escorted two Russian Tu-160 Blackjack, long-range strategic bomber aircraft."
The Russian bombers did not enter UK airspace.
The Russian Ministry of Defence said on Thursday that its aircraft, of the same type as were intercepted on Friday, had conducted a patrol over Belarusian airspace.
It comes as the UK military sends a "small team" of engineers to the Polish border with Belarus amid rising tensions between the neighbouring countries.
The personnel deployed to the border will look at how engineering support can be given to Poland as a huge number of migrants gather on the Belarusian side of the border.
Watch: Russia sent nuclear-capable bombers over Belarus on Thursday.