Both links take me to the same (correct) place!
This isn't the 1st time someone posts a link for a release on Amazon UK and it's goes to something totally unrelated or most of the time, goes to Item Not Found. Frankly, this happens most of time for me - some early buyer posts the link for the music release on Amazon UK and it's bad. Then someone else posts another link or says to search on Amazon's BSIN number and that works.
This has happened to me with Firefox & MS Edge. When someone else confirms it, I feel vindicated that I'm not alone in this. I have no explanation other than possibly different web servers or some quirk in browsers. You are in England, I'm in the US. Amazon UK may be using different servers for hosting their websites and using different links, so your link works for you in the UK, while it doesn't work in the US or other countries.
But the link I posted does work for Amazon UK in the US. If one doesn't work for someone, try the other!
EDIT - I see @beerking liked both of your posts so I assume that means your link works for him. And he's also in the UK 2 different websites, hosted on different servers, and directed to which one, depends on origin is a possibility.
EDIT 2 - I saw this in a local Best Buy store a number of years ago. The "external" website showed an item at one price. But when I asked a clerk about the pricing being different, they pulled it up on their "internal" website which showed the higher price. I had a printout of the external web page with the discounted price, which they did honor but it shows how companies don't always perfectly mirror their web pages from server to server. One may not be updated.
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