Trees require cutting back

The trees surrounding my property need desperately cutting back on the rear and side of my property. The trees are now overhanging and touching the roof of both my garage and conservatory. I have had it confirmed that the trees belong to new forest council. Furthermore I have also found that due to the amount of leaf residue from the trees and overgrown bushes that this has built up to such a degree that it is now above the damp course of my garage and is now causing a damp issue which I am not at all happy about. I would like to see the trees and overgrown bushes cut back and the leaf waste removed.