Just look at the likes of Newcastle 40% of the IFR inbounds route through class G airspace mixing it with fast jets not so fast jets, gliders, light aircraft, micro lights, hang gliders etc etc. With only one linking airway from the South West what else can they do!
Thanks for that information. But my question is, is it sensible or good airmanship to mix it with light aircraft and gliders? How is separation from gliders maintained?