I've been out with my back for a bit but now taking Pilates classes and everything feels fine so far. Been crawling around the new attic and installing the Intello membrane and taping for air tightness lying down and in difficult positions without issue. Phew!! I've put a call into the Plumber for first fix and will see when they are next available in 2025. Once they are available I'll book the Electrician.
Updates are as follows:
Interior stud work for outside walls nearly