"APFSStart:1456" during fresh install of High Sierra

[underfl0w]

Hey mate, sorry for the late reply. Since my last comment I seemed to have progressed pretty far in the process. Basically, came home from work one day and everything was working smoothly, system boots to Clover boot loader and through to High Sierra with no dramas. Web drivers and USBInject all sorted. Just need to iron out a few creases!
Thanks again for all your help!