(adsbygoogle = window.adsbygoogle || []).push({}); Go onto their region version of xbox.com, sign in then redeem from there
for example:

If you are in the US and what to redeem a UK code go on:
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AND

If you live in UK and want to redeem a American code go on:
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AND

Ireland go here:
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hope this helps!

Does this actually work? The only codes that are region locked are Microsoft Points I believe.

All Microsoft codes are Region Free I believe unless ones that come with games are For example the Elite 1 year membership might be region locked.

I'm sure they are region blocked

well i don't know about Microsoft Points being region locked but i do know other codes work.

Like for example i bought Mass Effect 3 for the Xbox(and Ps3 too) but i missed out on the N7 warfare pre-order pack for it since i ordered that copy from gamestop.ie so i bought the code from this guy in Hong Kong on ebay and it worked perfectly with my pal copy of the game.

I've activated US codes on UK accounts straight from the XBOX

Never tried it myself, might need to give me free US microsoft points to see if i can redeem it :FU:

LOL you think someones just going to give you something for Free

Have you tried this yourself and have successfully done it?

Well I can never get US Microsoft Point codes to work on my Canadian account.