For any of you that might be interested in looking for a permanent position as a runner in television I have found that the most useful place to look is on twitter. Follow @theunitlist who post regular job alerts for vacancies in television. These are often higher level roles that require a lot of previous experience, however there are quite a few job alerts for runners as well. Out of all the pages on twitter that I have found, this is the one I have found most useful so far.
I also recently discovered this site (http://www.a-p-a.net/index.php/vacancies/) the Advertising Producers Association that posts vacancies commercial production companies may have. Although perhaps not as exciting as some of the work experience placements we have had/going to, they frequently add many entry level jobs that some of you might be interested in having a look at.