I posted a topic earlier after talking with a BCO on the phone. I explained I have a tree 2 meters away from my foundations (after setting out it is actually 4 meters away). He advised I would have to dig 2.1 meters deep which I found very daunting. He would not advise me on how much of the rear stretch I would have to do this. I am in clay soil and have been advised the general is 1 meter. The tree is a cherry blossom . Would you suggest to dig along the whole rear at this depth. A builder advised me to cut the tree and grind the stump out as they have not visited yet, but I do not want to start the project annoying BC at the first step.