Once I had the wire through to the pantry, heading in the right direction for the back of the property, I drilled a hole down through a corner in the pantry floor where it wouldn't be seen underneath the tiles.
This took the wire underneath the house where I covered it with sticky back carpet to protect it and which also helps when I need to move the house around with it being 3 dimensional.
So now I have a lovely lit lamp in the hallway.
I think the hallway is just about finished now (famous last words)
A view from the stairs through to the front room.