So this is what we've done to our roof, this photo was taken about half an hour ago, as you can see it's intact and the plywood beneath the sheeting is dry:

Here's a couple of internal views, to give you an idea of the space we've created inside. First one from the second bedroom looking out to the kitchen:
This one looking through the kitchen window into the kitchen & living room:

This one looking through the bathroom window into the bathroom, dining room and bedroom beyond:

And here's the full rear elevation:

Our electricity meter box has also arrived, although it's not particularly exciting so I havent taken a photo.