well that sounds very similar to me. Niche area employed by bloodsucking advertising Nathan Barley's and their clients who want hollywood fx for 10p. Thats why freelancing is working out well as i dont have to deal with alot of these ppl any more. That said of course there are actually some nice ppl working in advertising/tv but also some cnuts of the highest order!
im thinking of doing exactly the same as you've done. just waiting for the results of an interview next week. if that doesnt come off, im faced with either working in the arse end of nowhere, going nowhere till i find another full time job, or taking the brave pill and go freelance and work back in london.