Want a Shaymin and will trade a Diancie Code *UK only*

Hi all. I have recently acquired a second diancie code valid in the UK. However the mystery gift can only be downloaded once, so I am willing to trade the code.
As Codes have high fraud risk, this is how it will play out.

We will trade friend codes.
You will offer me the trade in game, show me the shaymin but don't trade (Just for confirmation of the shaymin's existence).
We will back out, and i will give you the code. The Code WILL work and the diancie will be yours.
At this point we will trade again and you will trade me the shaymin.

This method requires some trust between me and the trader and I hope I don't get scammed >.>
This code is only valid until midnight UK time (approx 6 hours after this post is up) and is on a first come, first serve basis.

I hope to make a general trade and I hope you will be happy with your new diancie!