here's something i've quickly made while being bored in class:
there's only 4 major labels as of right now (what is known as “The Big Four”): Warner, Universal, Sony/BMG and EMI.
The Island-Def Jam Motown Music Group is what you can call an “umbrella label”, meaning it’s a group that contains many different labels: Island Records, Motown Records, Mercury Records
and Def Jam Recordings. Basically, they’re all subsidiaries of Universal.
however, the Island-Def Jam Group only distributes in North America. So here’s where another group comes in: Mercury Records Group of Universal Music UK, in charge of the distribution in the UK and most parts of the rest of the world.
ad now Vertigo Records: Vertigo Records is basically a record label operated by Mercury Music Group, which is operated by Universal Music UK, which is operated by Universal.
so to make things simple, Gaslight have not literally signed with Universal (even though Universal is the big machine behind their record label). They’re signed to Mercury Records
. In terms of distribution (and marketing and promotion), Mercury Records will be in charge of North America while Vertigo Records will be in charge of the UK and, as this article states, now the rest of the world.
so don’t over think it too much (as i have xD): Gaslight are signed to Mercury Records, all the other record labels and many different names are just there for distribution purposes.
at least, that's how i understand it. i did all this in class a while ago, so i haven’t checked my facts and i might have some things wrong… although i hope i don’t