Maj Tom,
It's even better than that, part 99 of CASR 1998 which introduced the .02 limit did not actually become law until Sept 2008! And even then is was advertised in such a manner as to make the general public (in front of whom we are meant to parade CASA's safety material) think that we could have a bit of a tipple on our way to work as long as we didn't bust the figure in massive font.
.02
This is, of course, the buffer we are given just in case we have had a few too many but still stopped 8 hours before flying and are not 'suffering the effect' of our consumption.
Stupid stupid educational material.
FRQ CB