Looking at the source code for the website it looks like they're...

Looking at the source code for the website it looks like they're using a customised version of one of wordpress's themes which, in theory, should prevent any updates to the theme effecting our websites theme. However, I believe this isn't foolproof and if wordpress has updated the theme it may explain the abnormalities that @takateazi pointed out above (not a professional, just someone with interest, so I may be incorrect).

Hopefully in the new overall we'll be getting a custom theme of our own, not a remix of a pre-existing theme but hey it definitely isn't the be all end all.