I need a web scrape

I need all the details on all letting agents in the uk hosted in Yell.

http://www.yell.com/ucs/UcsSearchAction.do?keywords=Letting+Agents&location=United+Kingdom&scrambleSeed=79207264&searchType=&M=&bandedclarifyResults=&ssm=1

I need the details here (name, adress and phone number) and also the email address on any related web sites.

Looking for someone with a clever script / program that can visit every associated website and find the email and bring it back.