Just to add to this, first code I got was for the US Playstore, changed my address/set up a second account figured hey no issue.. then I got an email from them saying
Thank you for taking part in ASUS Google Play promotion.
On 14th May we sent you a code for your £50 Google Play Voucher and unfortunately the code we issued was not valid for the UK.
We sincerely apologise for any inconvenience this has caused, please find the correct code below:
So I got $50 which I spent, then they added the £50 UK play to my account = result happy
// LG G3 (D855) // Stock // Stock //
// HTC One (M8) // GPE Stock // Stock GPE//
// Nexus 7 (flo) // Android L // Stock//
S3(White) > M7(Red) > Note 3(Black) > Nexus 5(Black) > M8(Gunmetal)/LG G3 (Titan Grey)