Aim listed shares

Is it possible to add some AIM listed shares, namely
EMIS Group
Concurrent Technologies
Augean
Johnson Service Group
Nichols
Learning Tech

Thanks

I’ve also seen a company which I believe is aim listed and I cannot find it on 212.

I’m new to all of this so trying to learn. Why are they not listed!??

Suppose they are limited in what they can get.

Also could you add Future plc??