As I understand it, the folk who need to be vetted are those who "regularly come in to contact" with young or vulnerable people. So try to get together with other members of your club so that you only guide/instruct/demonstrate on an irregular basis.
You do not want to fall foul of the jobsworths who, lacking any real knowledge, say "NO", just in case, and to prevent then having to take any responsibility.
The ultimate in this kind of stupidity is the church that decided that even the bell ringers had to be CRB approved.
The list of groups needing approval verged on "If you are not CRB approved, you shouldn't come to church".
As a teacher, my wife was forbidden to oversee primary school children in the toilets.
(Not a tacit admission that the LEA was employing paedophiles was it? – but if you'd met some of the parents! Forgive me for being cynical and practical!)
My desperate worry is with so many folk hiding behind Health and Safety, and calling for written Risk Assessments, we are well on the way to breeding folk who WILL injure themselves, (because they have never learned to think for themselves and about their next action) because there was no warning sign posted up!
We NEED young folk in the hobby, to keep alive skills, and so that they get the satisfaction of making or repairing something. How many items are scrapped because some small part has failed, but no one knows where to obtain the parts, or how to fit them? In some cases, the repair that we are likely to make will result in a better, more reliable and durable product than the "built in obsolesence/cost reduced too far" item.
Encourage the youngsters, but train them to behave safely, but take care what you do in case you are accused of misbehaviour.
Full marks to the clubs and societies that do encourage and train young members! Keep up the good work!!
Howard