However, you can live in the UK and buy something (if eligible, not everything) from the Amazon.com platform (with the same account credential) with AmazonGlobal.
I have already bought on Amazon.de while I have Amazon.fr
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Amazon.co.uk Gift Cards can only be redeemed on Amazon.co.uk. To redeem on other Amazon websites, you can purchase gift cards on the respective sites
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According to the Amazon.com gift card terms and conditions, an Amazon.com gift card is only redeemable toward the purchase of products on Amazon.com. Similarly, an Amazon.co.uk gift card is only redeemable on the Amazon.co.uk website. ... So you cannot use an Amazon.com gift card on one of their international websites.