Guys, im now going to look like a complete fool!
The last letter of the product key was in fact, not a letter. It was a number!!! Think I need my eyes testing.
Sorry about that, problem sorted!!
Adam

Glad it's sorted...usually is little thing like that.
Trust me!
Stick something in the customer service forum about the key ring, i'm sure it will get sorted. I think most of have made mistakes like that when building new kit, I think the excitement gets to us and we make silly mistakes, me included.
Yeah, ill give it a go with customer services. Aslong as the PC works, thats the main thing I suppose