Most popular free business directories?

www.mylocalservices.co.uk is good

Here's a list probably a bit dated now but it's better than nothing.

This list is all the FREE directories on the net with pagerank.
Pagerank 6 for http://www.turnpike.net/
Pagerank 5 for http://www.tsection.com/
Pagerank 5 for http://www.spheri.com/
Pagerank 5 for http://www.poddys.com/
Pagerank 5 for http://www.pleaseretrieve.com/
Pagerank 5 for http://www.linksmatch.com/
Pagerank 5 for http://www.linketeria.com/
Pagerank 5 for http://www.kingbloom.com/
Pagerank 5 for http://www.addurl-free.com/
Pagerank 5 for http://sonicquest.com/
Pagerank 5 for http://searchsight.com/Directory.htm
Pagerank 4 for http://www.websearches.info/
Pagerank 4 for http://www.web-central.info
Pagerank 4 for http://www.velendi.com/
Pagerank 4 for http://www.uudir.com/


Pagerank 4 for http://www.sumwd.com/
Pagerank 4 for http://www.softzdirectory.com/
Pagerank 4 for http://www.sitelibrary.net/
Pagerank 4 for http://www.simpledir.com/
Pagerank 4 for http://www.seekabove.com/
Pagerank 4 for http://www.searchwiz.org/
Pagerank 4 for http://www.searchtwentyfour.com/
Pagerank 4 for http://www.redjuniper.com/
Pagerank 4 for http://www.rdirectory.net/
Pagerank 4 for http://www.quick-silver.org/
Pagerank 4 for http://www.profitchoice.com/webdir/
Pagerank 4 for http://www.pr3.co.uk/directory/
Pagerank 4 for http://www.nintra.com/directory/
Pagerank 4 for http://www.network-room.com/links/
Pagerank 4 for http://www.mammoth-directory.com/
Pagerank 4 for http://www.look4business.org/
Pagerank 4 for http://www.jupiter-directory.info/
Pagerank 4 for http://www.jlinternet.co.uk/directory/
Pagerank 4 for http://www.gdotz.com
Pagerank 4 for http://www.addyoursitefreesubmit.com/
Pagerank 4 for http://www.addyoursitefreesubmit.com/
Pagerank 4 for http://www.777media.com/
Pagerank 4 for http://www.4-fun.biz/directory/
Pagerank 4 for http://thebusinessdir.com
Pagerank 4 for http://perfext.com/
Pagerank 4 for http://directory.sysice.com/
Pagerank 3 for http://www.zerovis.com/dir/
Pagerank 3 for http://www.websitetop.com/
Pagerank 3 for http://www.webdirectory.co.in/
Pagerank 3 for http://www.venus-directory.info/
Pagerank 3 for http://www.uuiq.com/
Pagerank 3 for http://www.uranus-directory.info/
Pagerank 3 for http://www.TheSEOKing.com
Pagerank 3 for http://www.skaloosh.com/
Pagerank 3 for http://www.seofriendlydirectory.com/
Pagerank 3 for http://www.searchworth.com/
Pagerank 3 for http://www.searchlook.com/
Pagerank 3 for http://www.searchave.com/
Pagerank 3 for http://www.saturn-directory.info/
Pagerank 3 for http://www.riodirectory.com/
Pagerank 3 for http://www.ranktips.com/directory
Pagerank 3 for http://www.ranked1.net/directory/
Pagerank 3 for http://www.querycube.com/
Pagerank 3 for http://www.purple-directory.com/
Pagerank 3 for http://www.pluto-directory.info
Pagerank 3 for http://www.pileiton.com/
Pagerank 3 for http://www.pedsters-planet.co.uk/directory/
Pagerank 3 for http://www.netkushi.com/directory/
Pagerank 3 for http://www.neptune-directory.info/
Pagerank 3 for http://www.moon-directory.info
Pagerank 3 for http://www.monkey-directory.com/
Pagerank 3 for http://www.mercury-directory.info/
Pagerank 3 for http://www.megri.com/directory/
Pagerank 3 for http://www.maxlinks.org/
Pagerank 3 for http://www.mars-directory.info/
Pagerank 3 for http://www.links-factory.com/
Pagerank 3 for http://www.kingoftheweb.net/
Pagerank 3 for http://www.infovisual.info/directory/
Pagerank 3 for http://www.guide-directory.info/
Pagerank 3 for http://www.free-website-directory.com
Pagerank 3 for http://www.dmscs.co.uk/links/
Pagerank 3 for http://www.directory.kalius.net/
Pagerank 3 for http://www.4do.org/
Pagerank 3 for http://searchranger.net/
Pagerank 3 for http://referralandrecommendation.com/linkdirectory/
Pagerank 3 for http://directory.zappster.com/
Pagerank 2 for http://www.yourfreelink.com/
Pagerank 2 for http://www.suredirectory.com/
Pagerank 2 for http://www.sun-directory.info/
Pagerank 2 for http://www.idorel.com/
Pagerank 2 for http://dir.portprophecy.com/
Pagerank 1 for http://www.thevividedge.com/
Pagerank 1 for http://search-group.com/
Pagerank 0 for http://www.webmastertag.com/
Pagerank 0 for http://www.speedydirectory.com/
Pagerank 0 for http://www.seekon.com/
Pagerank 0 for http://www.saanvi.org/
Pagerank 0 for http://www.retailposinfo.com/directory/
Pagerank 0 for http://www.linksnavigator.com/
Pagerank 0 for http://www.ilushkin.com/directory/
Pagerank 0 for http://www.funender.com/free_link_directory/
Pagerank 0 for http://uk.geeksonsteroids.com
Pagerank 0 for http://directory.inmeres.com/add-url-free.php

I use Freeindex and have generated lots of leads through them...

Hope this helps!