Accomplishment highlights:
* Autodidact. High school dropout. No degree.
To almost any employer, that is not an accomplishment, much less a highlight! If you're a high school dropout who is very accomplished since then, just silently drop any mention of your education from your resume. Everyone will assume that you left it off because it's irrelevant given all your experience since then.
But you clearly believe that your 2:2 in Physics (for Americans, a 3.0 GPA) is worth more than someone else's 1 in Urban Forestry Management (for Americans, a 3.7 GPA) so presumably you think that there is some variation in difficulty among degrees, and presumably you believe that smarter people will be able to get better degrees?