Adele's latest single, Hello, has stormed to the top of iTunes charts in no less than 106 territories - but the keen geographers amongst you will realise that figure leaves a good 90 countries unaccounted for.

Perplexed by the idea that there could be people out there that haven't spent the past six days buying Hello over and over again on the Apple platform, we started to sift through the iTunes chart territory by territory to see who was letting ...