NBR again, but finished the interior build as much as I'm able this weekend, most of the work is done with the exception of some plasterboard repairs and removing some wallpaper.
It's taken me about 18 hours to board out the house, in part due to inexperience and part due to needing to move 8'x4' (2.4m x 1.2m) boards up a narrow staircase where the door opens onto the stairs and then around a very tight 90° turn at the top. None of the battens were straight, with some of them warped in all dimensions so I wasn't able to get perfectly smooth install, but it should look good once the plasterer has been over them.
Once he's been then new skirting boards are the next job and it should be ready for painting.