*~*~Update~*~*

Regarding my missing codes from one of the two magazines I purchased yesterday afternoon.

I contacted the head company that owns Games Master, Games Radar, late last night (through their onsite emailing page) and also emailed Games Master through the email provided on their Facebook this morning.
Games Master (I assume the latter email is more reliable than the first) replied not too long ago apologising for my lack of code slip in my purchased magazine and requested a photo of the magazine (as proof of ownership/ purchase). I sent the photo and they said they will be sending a replacement code slip asap.

To those that have bought a mag and not had the code within, please contact the company and they should ship one out to you.
Be warned, apparently within the office they have a limited supply of spare code leaflets, but I'm hoping all should be okay for those who bought and missed out.