Have just found some great pictures of how the window used to be from when my mum was here, and we were taking pictures of her dog in the garden 
I REALLY want to post pictures of before and after. I'll see if I can find anything similar on google haha!
Presuming they work till 5 I'm expecting them back anytime soon, ahhh. I'm just going to pretend I can't see/ hear them.
new all the garden is definitely mine.
There's also no other access at all, if you think of the old three storey type buildings that are sort of spread out in "squares" in each neighbourhood, then inside each square is completely secure walled off gardens? It's like that, so there's a wall round the entire garden, then same with next door etc.
Goodness I'm explaining this awfully! I've been trying to make a steak pie all afternoon so haven't had time to do a diagram but I think I might have to 