I’ve managed to confuse myself
I know I can go out from the back of the house by 4m without permission.
However we have a downstairs bathroom that sits proud of the house (it was extended years ago when the council owned it to get rid of the outside loo)
So, does the 4m count from the back of the bathroom or the back of the house?
If from the back of the bathroom it’d be quite an epic conservatory