I've tried that but the man pages are not massively helpful. All I see is what I've pasted below, it doesn't actually tell me very much but maybe I'm just being uber-dumb
The locale program writes information about the current
locale environment, or all locales, to standard output.
When invoked without arguments, locale summarizes the
current locale environment for each locale category
defined by the LC_* environment variables.
Write names of available locales.
Write names of available charmaps.
Write names of selected categories.
Write names and values of selected keywords.
Character classification and case conversion.
Date and time formats.
Non-monetary numeric formats.
Formats of informative and diagnostic messages and