After a long day upgrading various software, the site is now open. There are some new features along with this new version of vBulletin, most of these have been activated for members only.
If anyone has any problems using the site as a result of this update, please ensure you report it in the help desk. I have tested as much as a can, but I could have missed something.
Next up - a new look for the site (in a few weeks).