to treat anyone less favourably than a person of the opposite sex is, or would be, treated in the same circumstances (direct sex discrimination).
to apply an unjustifiable condition or requirement which, although it is applied equally to both sexes, is such that a considerably smaller proportion one sex rather than the other can comply with it (indirect sex discrimination).
to apply an unjustifiable provision, criterion or practice to a woman which applies or would equally apply to a man, but which is such that it would be to the detriment of a considerably larger proportion of one sex than of the other, and which is to her detriment.
to discriminate, in employment or training, because a person is married or on the grounds of family status.