I am glad we managed to resolve this issue for you and left you happy, WeOwnTheSky.
It is interesting that the usual response to problems from independent game stores is one of "You've been scammed!". This was definitely not the case here.
Whilst I accept that there are many CD Key sellers on the internet, and some of them do sell "dodgy" keys - everything we deal with in ZiiP is from boxed stock. In this case, we made a mistake - and we dealt with the situation with the highest level of customer service possible.
@Deadbeat, I'm not sure why the NHS doesn't like our site! We have an associated gaming community and forum - maybe something there triggered a "block". We are however, definitely not fraudulent.
Thank you OcUK for allowing me to respond.. Please do not consider this advertising, only a response to our name being mentioned.