iPhone not showing location in Photo Library

My iPhone used to say at the top where and when my photos were taken. It's stopped doing it over the last couple of weeks, I've not changed anything.

The only exception is when I've taken a photo at home, and then it says "Home" at the top, with all the others saying "Yesterday" or the date they were taken.

The data is there because it's shown on my MBP!!

So, this is what it used to be like:

It now says "Yesterday" or the date the photo was taken:

But it knows where the photo was taken as the location shows up on my MBP:

As I said, I've not changed any settings. Any ideas?

Thank you