Sorry took me so long to reply!
Took a look at those hotfixes against our Server 2008 DCs and, surprise surprise, they weren't applied. However we already had plans in the works to upgrade all our DCs to 2012 R2 that weekend so we didn't bother applying the hotfixes.
After upgrading to 2012 R2 there were no issues with binding. I assume that the hotfixes would have worked fine.
Just wanted to make sure I put that this was resolved, thanks for your help!