I am speaking as an individual here - not on behalf of the site or anything. 
But I'd speculate that it's covered by the Data Protection Act to some extent and maybe would require a warrant.  I don't really know. 
  
To be honest though it's far more likely that anyone wanting to make a prosecution case would simply use the information some people freely post on here to 'catch you in the act' as it were.  That along with the exif-data in the photos that get posted which give a whole heap of info about the time, date, camera etc. 
See here  http://www.thehuntinglife.com/forums/index...showtopic