Following this question I have modified
/etc/xdg/lxsession/LXDE-pi/autostart to read:
@xset s off @xset -dpms @xset s noblank @midori -e Fullscreen -a http://localhost:8080
However, when it boots up it does not go fullscreen, it is windowed. My guess is that the script runs before all of the graphics drivers are loaded so the screen size is yet to be determined so maybe adding in a delay somehow would work? This is a raspberry pi 0.