I have this article (actually coming from a popular economics blog) that quotes news sources as saying that the UK and USA are pulling their search teams out of Japan. The blog article does quote further news sources, and an informal email source, so feel free to track down the public info.

Normally I would not quote an article from an economics blog on this forum. But to be honest - these guys at ZeroHedge do a great job of picking up lead stories from the media across the world. So I actually check them as a news source these days. I'm not sure how they do it - but they do pick up stories quickly. For example, I heard about the first riots in Cairo on this blog - and that was long before mainstream media had any journalists in Egypt covering the event. Go figure.

http://www.zerohedge.com/article/us-uk-pull-search-teams-out-japan-tepco-admits-situation-severe

other Pete