Location not showing on backed up photos on icloud

If I log into my icloud on my desktop to look at photos which were automatically uploaded to the icloud from my iphone, I expected to see the same location descriptors as appears at the top of photos on my iphone, on the photos on my icloud. I want to delete the photos on my iphone as I really need the space.

But I can only delete the photos on my iphone if I know they are stored properly on the icloud which I can access from my desktop, - and that means have the location header.

How can I get the location headers back on all my photos sitting in my icloud?