I saw the one-page-sheet recommendation in a lot of places, but this didn’t match up with actual CVs I’ve seen on people’s pages.
Expanding on this, acceptable & typical lengths for CVs seem to vary between sectors. My feeling is that 1-page CVs are a bit uncommon in business (though some people do make it work!), with CVs more often 2-4 pages long. But academic CVs are often a lot longer, and can be pretty much arbitrarily long. (I suspect highly eminent academics’ CVs tend shorter. Presumably they have less to prove.)
Expanding on this, acceptable & typical lengths for CVs seem to vary between sectors. My feeling is that 1-page CVs are a bit uncommon in business (though some people do make it work!), with CVs more often 2-4 pages long. But academic CVs are often a lot longer, and can be pretty much arbitrarily long. (I suspect highly eminent academics’ CVs tend shorter. Presumably they have less to prove.)