Have you tried asking around in the area where you work to see if there are any local examiners who you could meet and get to know? They might then be willing to sponsor you? As you have posted this in the jazz forum, I presume you are keen to be a jazz examiner in particular?
ABRSM likes its examiners to be professionally active in music (teaching, lecturing, playing etc) so presumably you have local contacts in this respect?
If not, how about booking some lessons for yourself with a college professor at one of the Royal Schools and try that avenue?
I assume you have the relevant details and paperwork from ABRSM but you could also refer to
http://www.abrsm.org/?page=about/examiners.htmlwhich gives some insight to what's looked for.
Good Luck and hope you are successful!