For listings of Production Companies this is proving quite interesting: www.thelocationguide.com - this site also has a Pre-Production Forum where you can ask for recommendations externally.
The Online Location For Your Next Production
thelocationguide.com is a free online resource launched at the Cannes Film Festival in 2001 to help globe-hunting producers track down the best suited locations with services to match their budget.
The site covers over 100 countries and provides contact information for over 1500 production service companies, location finders and fixers, studios, film commissions, film boards and government film liaison offices worldwide. The site also provides a global platform for countries, regions, location services and facilities to promote themselves to producers and production companies from around the world.
Since its launch, thelocationguide.com has registered in excess of 14,800 users from over 100 countries.