Just to add to this as I'm unsure if related:
When I enter recovery mode it appears to try and install some sort of update and then brings up an image of a 'dead' Android and an exclamation mark, signifying something hasn't happened.
When checking through the apply update via SD option, I can only scroll down to the bottom of what's listed. I know more folders are available off screen but moving down doesn't move the page down, only where the highlighted section should be (IE, move two presses below the screen and it takes two up presses to be visible again)
When rebooting from recovery mode it tries to do something and then highlights in red FAILED TO MOUNT/DATA (INVALID ARGUMENT)
Unaure if it's related and I can't currently check the card in another device. Shall report back when I can get hold of my removal tool.