Kind of odd how BA are now magically 100, when traditionally KLM ( Oct 1919 ) and Avianca ( Dec 1919 ) were considered the World's oldest airlines and BA didn't even appear in the top 100.
Nothing a bit of historical revision can't fix, though. "Oh yeah, all those little inter-war airlines we never mentioned before... yeah, they're really important now." A bit like some bolted-on plotline for an Aussie soap!