Are the Gamestop Membership Cards redeemable in the UK, anyone know?

Sorry if this is in the wrong section, didn't know where to post exactly

Hey guys, well my membership is just about to run so I thought I may as well pay a little more and get the exclusive Katana, before I buy I'm just wondering if the the cards are redeemable in the UK for example? I just thought that I'd ask before I jump to buying one. I hope someone can let me know as it would be much appreciated!

Also, if someone knows the answer and has one for sale or lives close by to a US Gamestop, please do let me know as I'd buy the card from you and pay any extra expenses if you need to travel for it

 

I'm fairly certain they are redeemable anywhere. I can sell you one for 50m if you want?