Australia's the same - 'best before' aka 'it won't go very bad very quickly but it may be stale and unpleasant', and 'use by' aka 'this is milk and you know mil

Australia's the same - 'best before' aka 'it won't go very bad very quickly but it may be stale and unpleasant', and 'use by' aka 'this is milk and you know milk goes bad rapidly after a set time so use it before then'. 'Sell by' never made sense to me, because it doesn't instruct the end consumer what to do with it once they get home. It's got a relatively variable amount of time after the 'sell by' date until the product goes bad, and consumers simply can't judge that.