Hi,
I often buy games from NZGameShop thanks to it being a lot cheaper than buying locally.
However, I've been hesitant to start purchasing PS4 games from them as I'm worried that I won't be able to get the DLC for them on the PSN.

I'm aware that the games themselves are not region locked, but that the DLC from the regional stores is.
As such, I know if I were to buy a US game, then I would definitely have a problem.

However, the UK is the same region as NZ (as far as the likes of blu-ray and things go), but does NZ effectively have it's own PSN store making the DLC not compatible?
I'm looking at games like Metal Gear, Infamous etc...

Does anyone have any hands-on experience with this?
Will it work? Or would I need to have a UK based account in order to get the DLC working?
I've searched everywhere for the answer to this, but can only find examples of US DLC in NZ, not UK.
Thanks!