Russian Blackjack aircraft approaching UK airspace (Picture: MOD).

For the third time in a seven days, RAF aircraft have been scrambled to monitor Russia jets.

On Wednesday, Typhoon fighter jets were scrambled from RAF Lossiemouth to monitor two Russian bombers approaching UK airspace.

Two Russian Blackjack Tupolev Tu-160long-range bombers flew in international airspace off the UK's east coast before returning north.