What region will matchmaking put me in? (PSN account different to physical location)

I have a PSN account which is registered to my old address in New Zealand, but I live in the UK now. I have brought my PS4 in the UK and I am planning on playing a UK copy of the game. Where will the matchmaking system put me in NZ servers, or UK ones?

I don't want to pay for PS plus again, but I would rather that than register the game to the account in the wrong location and have high latency.

Thanks in Advance!