Correct!
You'll have to really do some research. You should check
www.theeroticreview.com ..see if they have an england section and see what agencies there have good reviews. Usually that's a good sign. Check eros.com ... search england and look for any agencies that could be listed in your area or CLOSE to your area and contact them that way.
Stay away from agencies that build their websites on free sites. Stay away from agencies that don't have their own domain name on the web. Stay away from agencies you can't find anything on(Make sure you do a thorough search) I'll do a quick search here in a few minutes and see if i can find any. Stay away from agencies that ask you to "audition". Ooh and do not do anything for free. DO NOT let them cheat you out of your money. they tried to get me like this... don't let it happen!