Shall try and pm you a picture of him, it's so cool that you can find out all this information from the web! (Previously we had no idea about his life pre jersey). I have also emailed them, hoping they reply :)
I think I lease the pony you mean; he is in jersey at le Claire's riding yard and meets all your descriptions, his show name is millersford comet, he is 12 now, almost 13, 13.2, new forest gelding with flaxen main and tail, irregular white marking on his forehead, and very very cute :)