Conservation area? Really!?

My garden leads directly onto woodland and I was told this was a conservation area and would never be built on. This obviously was very attractive as I would never be overlooked by another house.

I am actually allowed to rent part of the woodland which makes my garden much larger and I can enjoy the trees & wildlife etc in the woods.

With the renting of the woodland comes responsibility - well I think so anyway. I was pretty horrified to discover quite quickly that the woodland has been used as a dumping ground - not unusual you may think but in this case it was by the builders that built the houses in 1995 (!)

Since 1995 everyone seems to have cast a blind eye on the situation. Well no more. I have spent weeks clearing areas of old wood, leaves etc but worse of bottles/cans/plastic/wire ( all dangerous for the wildlife). I have left a lot of leaves and wood as obviously it will mulch down and be good for the ground. 

I decided to plant a few snowdrops/bluebells/daffodils etc under the trees in keeping with the woods. Once I started digging I wish I hadn't. I uncovered stone/slate and bricks plus all sorts of other building materials. After 2 hours I had uncovered this little lot (a pile much bigger than it appears):

It was appalling that the builders had taken the trouble to bury it all next to the trees and been allowed to get away with it when people like me that rent the area are told of 'rules of use' of the woodland. The slate was extremely sharp and often jutted up - had a child or even an adult fallen over it they would have really injured themselves.

I can't believe that builders are allowed to get away with this behaviour - how much longer would it take to get rid of the stuff than it did to dig holes and bury it?

I also can't believe that the 2 (possibly more) residents of the house had ignored it all for nearly 20 years *sigh*.