I remember it well!
I entered a couple of regional qualifiers up near me, one was in Sheffield at the Octagon Centre, the other I can't remember where. I did well enough to qualify for the Champs held at Three Counties Showground in Malvern that year, 1986.
I did absolutely rhubarb racing, my modified Hotshot had so little steering lock I had to do a 3 point turn at the hairpin every lap! I did manage to win the concourse d'elegance though and come home with a trophy for it!
The tokens that you won were called Tamiya bonds, I won enough for a set of the yellow plastic oil filled shocks and a Tamiya cap which I still have somewhere.