How to find the “official” Apple Store on Amazon UK?

Hi, thank you all in advance for reading this!

I have recently been fortunate enough to be gifted some Amazon gift cards and would like to use them to buy my first ever iPhone! But given the prevalence of scams/ fakes, I’d like to ask a few questions re the “Apple Store” on Amazon UK. I would be really grateful for any help I could get from this community.

1) From my understanding, this “Apple Store” isn’t actually run by Apple. Instead, the “Apple Store” on Amazon is operated by Amazon (in my case, Amazon UK?) as an Authorised Apple Reseller (AAR). Is this correct?

2) If so, how should I go about finding the “official” Apple Store on Amazon UK? (The one that was granted “authorised apple reseller” status). I tried scrolling through the list of AAR on Apple’s websites (Find Locations- Apple (UK)) but as far as I am aware, they are all physical brick-and-mortar shops. (Eg Currys, Argos, Carphone Warehouse etc.)

3) I did find, separately, an alleged “Apple Store” on Amazon UK but I’m not entirely sure how to verify whether or not the store is real.

The URL is https://www.amazon.co.uk/stores/AppleUK/page/6DAC587E-4CF0-472E-BAEA-2EBAF3651291?ref_=ast_bln

Given that an iPhone isn’t cheap (not for me anyway), I’m trying to be as cautious as possible before making any transactions. I understand that the safest and most reliable way of making Apple purchases is through its online/ physical stores but the gift cards I’ve been gifted are issued by Amazon UK. For this reason, I can’t buy directly from Apple.

Like I said at the beginning, I’d be really grateful for any help/ clarification I get from the community!