So after about six months I finally launched Horizon Shift on Steam.
It got off to a slow start but things start to be picking up now.
Here's the steam page
http://store.steampowered.com/app/326120/
The reviews have been amazing which has been a massive relief.
Now on to a sequel <img src="{SMILIES_PATH}/icon_e_smile.gif" alt=":)" title="Smile">