1. glass pieces were scattered all over the place, inspite of knowing that glass cannot be disposed in the skip, or household garbage bin etc.
2. Worst part - glass pieces were mixed with garden soil, rubble and demolished leftovers. I've spent 4 hrs separating them. No rubbish-collectors willinng to pick them.
3. 8 large panels were left without breaking up - approx size 5 X 8 feet. None of these fit in the skip so I had to hire another rubbish collection to break to fit in the skip.