A very experienced flight instructor from the UK has advised me that in that country, there is no prescribed frequency for VFR aircraft when flying in uncontrolled airspace.
He said most of them just listen to music through the headphones. They can call up for a radar advisory just as we can, but not many people do that and quite often it is not available.
He also said:
“Australia is a nanny state where the rules are made by people who feel they have a more valid claim on what they consider to be good for you than you do.”
He pointed out that the UK follows ICAO recommendations for Class G airspace, which means that VFR don’t even require a radio.