Hi all,
Hate to use the term, but absolute noob here that has made a very rookie mistake with my site permissions.
I was adding a new user to the site with restricted permissions. That worked, but I've also managed to duplicate the admin permissions to the same settings - now I can't change the site myself.
I've had a bit of a look around the forums, but really appreciate some help if anyone knows how to reset the admin settings if I can't access the administrators/users section of the backend.