Fergus,
Both GenBank and EMBL have on-line systems which may be queried
via email from your location. Each have versions of the database
that are updated on a daily basis.
rather than repeat myself, I might also refer you to my earlier message
to the bionet.molbio.genbank bulletin board for data
with respect to your "behind the times" comment.
Regards,
Paul Gilna
GenBank, Los Alamos