Interesting premise that you only need to worry about fallout if you are within 25 miles of one of the nuclear power plants.
If you believe that, you'll believe anything. Again, false /misleading data at the heart of the article.
Research how far the fall out reached from Chernobyl see
http://www.toxiccoast.com/ChernobylFalloutmap.jpg
This means that we are all in the heavy fallout zone of most UK and Western european plants. Our chances of avoidance are very much influenced by prevailing wind direction and strength on the days immediately following any disaster.