As pp have stated you may not get anywhere with appeals because you won't have compelling reasons why any given school is the only school that will do
I strongly disagree. The OP has a compelling case. Contrary to what is sometimes said on here, the OP does NOT have to show that the appeal school is the only school for her son. She simply has to show that her son will be prejudiced (i.e. disadvantaged) if he doesn't go to the appeal school and that this outweighs any prejudice to the school from having an additional pupil. The only schools considered are the appeal school and the allocated school. The fact that there may be other schools where there are no safeguarding concerns is irrelevant. So the fact that there are genuine safeguarding concerns related to the allocated school means that the OP has a strong case for any school.
how come this "panel appeal" is like a cloak and dagger type thing or.is that just here in the south
I share PanelChair's concern that you think it is a "cloak and dagger" thing. I suspect the problem is that, since you only applied for one school (which was not a good idea), in order to appeal for other schools you have first had to apply to places at those schools. You cannot appeal until you have applied for a place and been rejected. So you have taken the refusal of your application for a place as refusal of your appeal. It isn't.
I am concerned that, because of your misunderstanding, you may not have appealed for the additional schools at all. You may have simply applied for a place. If the letters refusing a place told you how to appeal the decision, you need to submit an appeal for those schools.
I also share myrtleWilson's concern that you may not have actually appealed for your preferred school. The letter you received at the beginning of March telling you which school your son was being offered would also have told you how to appeal for a place at your preferred school. Have you followed the instructions in that letter? If you are uncertain, ring the local authority and check if they have your appeal. If they don't you need to submit your appeal as soon as possible. You can appeal at any time but you need your appeal to be heard with all the other appeals. Even though you have probably missed the deadline, that should still be possible if you get your appeal in quickly.