I've only ever known Nike to be pronounced as /ˈnaɪki/.
Recently, I've heard many BrE speakers exclusively read the brand as: /ˈnʌɪk/.
Do all BrE speakers pronounce Nike in this way? Is it a regional thing? Or a generational thing?
If you go through the list on Forvo: Nike. Almost every English speaker reads Nike as /ˈnaɪki/ apart from the one BrE recording.