It has recruited NetResult, a specialist in protecting intellectual property online, to police the web for illegal clips of Premier League action and has ordered YouTube to make sure the clips are removed.
It has written to the company demanding an explanation for the thousands of copyrighted clips.
The league is determined to crackdown on illicit footage broadcast via the internet so that it does not risk compromising its TV rights package, worth £1.8 billion from 2007-08 to 2009-10.






