Well, everyone is back from holidays today and my Structural Engineer made a comment about the Ground Investigation Report I've been digesting all day. Turns out my soil is very poor despite hundreds of houses being constructed all over the rest of the estate 25+ years ago, I'm the one with a problem now! I'd have to dig / excavate nearly 2 meters of soil to reach sufficient bearing capacity which means my plans to start groundworks next month are almost dead. If you see results like mine....RUN