This collection of caches has nothing to do with the Church Micro series in the UK. Given that the Australian 2016 census indicates that No Religion and Jedi Knight are the fastest increasing classifications of the optional religion question "What is the person's religion?" it is not surprising that there is surfeit of empty churches that have been repurposed.
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Callington Miners Church, closed when Union occurred in 1900, it was restored & reopened 1931. And closed again. It is now private residence.
To find the cache complete the following coordinates with information from the building headstone, ABCD.
Cache is located at S 35° 07.00A' E 139° 0D.44A'