They work to a different system in the US please do not even attempt to compare the procedures they can be quite different
But that is the point. It works over there, so why not apply it here ????
I would be happy (and I believe it would be sensible) for every "commercial" airport above a certain size (exeter / plymouth / Bournemouth / Gloucester / Cardiff / Bristol / Filton etc...) being surrounded with Class C airspace, to a certain radius, say 5nm, and to a certain altitude (say 5000'). BUT I would like to see the CAS stop at 5000' and have G above it for a few thousand, which is essentially the american philosophy. I would also like to see Class C services being offered by ATC, meaning that if I need to transit (which is less likely due to the above), I call up ATC and then I am given an altitude and mode C sqwark and will accept vectors. This would ease flight planning, especially IMCr IFR, reduce CAS busts (the standard dimensions are standard), and for people not wishing to talk, they can go over the top at 5500.
Nearly all airspace in the USA is toppable, including the Class B layer cakes surrounding the busy airports - which is why they can sign write over LA - they do it at +10,000'.