[cloddopper]

You may also find it is a sensible thng to to do to check witht eh local planing dept.
 I know it's a pain & might bring the spotlight on you .... I seem to recall reading of  someone in a national paper who  got a heavy fine for dumping  registered waste on a field ( repairing his track ). 
They also had to clear it all off,  dispose of it correctly under licence & then apply for planning so that they could then lay down a  woven membrane & put god only knows how many tonnes of  40 & 20 mm crushed clean stone  down for the roadway .

 TIP OFF.
 I'm led to believe that many councils have signed up to Google earth to get weekly /monthly photographic reports of what new undertakings can be seen from satellites in their areas so that non consented construction etc .can be easily checked from an office desk .