@martyyn That is why I always mention to buy a PoE injector :) If you purchased from Go Wireless then flick them a quick message - they're a good bunch of people who may help you out.
I wasn't paying enough attention obviously, but I thought you would only buy a PoE injector if you intended to have the AP located away from a power socket, which I dont.
I bought it from Ascent. Even when creating an account the Go Wireless price was more and I've bought plenty from Ascent without any problems. I ordered the Grandstream PoE on Friday so hopefully it will be here today.