Does anyone know of anywhere that advertises Anthropology-related jobs?! Ideally physical Anthropology...

Most academic positions come through research grants and/or knowing someone doing research and getting them to give you a role.

For non-academic positions:

General overview focusing mostly on museums
http://weber.ucsd.edu/~jmoore/bioanthro/brochure2.html

And from a nature article:
http://www.nature.com/naturejobs/2009/0 ... -922a.html

Or just look it up on a job search engine:
http://www.jobrapido.co.uk/?q=biological%20anthropology