@Wayne *******
Neither ID-page of your passport, drivers licence, utility bill or bank letter prove that you actually are on your current location, but you might risk they’ll ask you to upload all your passport pages including blank ones too and you’ll need to start the trip from where your visa was issued. If you apply elsewhere with a UK passport you just upload your latest stamp to prove current location. I applied recently for a Non O just with ID-page and no issues at all.
This is from the Thai embassy in Norway.