@David it doesn’t look like the UK Version of the Ariya does have the remote parking feature. I think at the moment all it has is the Pro Pilot Self Parking System. When I go and have a test drive at our local Nissan garage in the near future I will ask.
I have the Remote Parking feature on my Hyundai Tucson Phev which I find a handy feature, I have used it many times to get me out of tight parking spaces.