Can I use Spotify gift cards in a different country?

[Reut]

I travel around the world a lot and have been using Spotify Premium for quite a while. I have a UK account but no credit card, so until now I always had friends from there buy me gift cards when needed. 

I'm in Denmark now and my account expired, so I'm wondering if it's possible to buy a gift card here and use it on a UK account? Or alternatively, is it possible to buy a UK gift card online anywhere without having a UK credit card?

I know I could just change my country settings to Denmark, but as I said - I travel a lot and won't stay here very long, so I'd rather keep my account as it is.

Any help would be much appreciated 🙂