RAF Typhoon intercepts Russian aircraft (Picture: MOD).
RAF Typhoon fighter jets have been scrambled twice in one day in response to Russian aircraft, two of which were approaching UK airspace.
The Ministry of Defence (MOD) said the jets scrambled from RAF Lossiemouth and Amari Air Base (Estonia) on Thursday in two separate incidents.
RAF Quick Reaction Alert Typhoon fighter aircraft scrambled from RAF Lossiemouth, with an RAF Voyager from RAF Brize Norton, to monitor two Russian 'Bear' maritime patrol aircraft.
Meanwhile, Typhoons deployed on NATO Baltic Air Policing also scrambled from Amari Air Base to intercept a Tu-142 and monitor two SU-30 flanker fighter aircraft, flying close to Estonian airspace.
The MOD said Russian aircraft "frequently attempt to test NATO's level of readiness" as well as conduct "intelligence-gathering missions".