I think in the UK, unless I am missing something, it works the same as everywhere else?
Think something like Broadchurch, for example...
Series = Broadchurch
Season 1
Episodes 1 to 8
Season 2
Episodes 1 to 8
Season 3
Episodes 1 to 8
That said, with the fields populated in your library, you can set up views using those fields to display the data just about any way you please.
For help with that, you would need to let us know where you are viewing... i.e. standard view in MC or Theater View on the TV, or both, and also, whether or not there are any client/server/DLNA MC connections in play.
If you had the three season box set of Broadchurch, how would you like that to be presented to you? Would you not want to have the episodes defined by season? or would you just go with Broadchurch --> episodes 1 to 24?