The Avro Vulcan (sometimes referred to as the Hawker Siddeley Vulcan) is a jet-powered delta wing strategic bomber, which was operated by the Royal Air Force (RAF) from 1956 until 1984. Aircraft manufacturer A V Roe & Co (Avro) designed the Vulcan in response to Specification B.35/46. Of the three V bombers produced, the Vulcan was considered the riskiest option. Several scale aircraft, designated Avro 707, were produced to test and refine the delta wing design principles.
The Vulcan B.1 was first delivered to the RAF in 1956; deliveries of the improved Vulcan B.2 started in 1960. The B.2 featured more powerful engines, a larger wing, an improved electrical system and electronic countermeasures (ECM); many were modified to accept the Blue Steel missile. As a part of the V-force, the Vulcan was the backbone of the United Kingdom’s airborne nuclear deterrent during much of the Cold War. Although the Vulcan was typically armed with nuclear weapons, it was capable of conventional bombing missions, a capability which was used in Operation Black Buck during the Falklands War between Britain and Argentina in 1982.
Vulcan XH 558 is the only Vulcan left that is flying. It isn't the one used for the first attack on Stanley. That was XM 607 which is now a gate guard at RAF Waddington. XH 558 wasn't deployed for the Falklands War because it was in the middle of conversion to the tanker role having been confined for some years to maritime reconnaissance. Its number identifies it as one of the earliest Vulcans, probably built around 1960 !