Full liaison is made with full size aircraft and the modellers always have a licensed radio operator with them to keep everything safe.
This is clearly very well thought out and can be made to work where modellers operate on the airfield.
I know of examples where they operate outside the fence.
Also, many model flyers will be lone operators without the knowledge and support of a well connected organisation.
I can't imagine that legislation will cover this effectively.
(Sorry WL, I guess we posted at the same time. I can also recall spectacular r/c displays at the Coventry Air Display many years ago)
SD