I had a new staircase arrive on Wednesday last week, so this Saturday my Dad and I started the swap.
The old stairs were just a straight run of 13 steps, but had a case of woodworm and dry rot, so they needed to come out.
I thought I'd take advantage as well, with the house now having a completely new layout. The living area and kitchen will now spill into the new rear extension, and whereas previously the house only had a metre square welcoming area at the base of the stairs when you came though the front door, I've since knocked down a wall, built another, and created a hallway

So the new stairs have a turn at the bottom, which I find much more pleasing
The old set...
The old set down...
And just tonight we put the last tread and riser on the new set...
There's banisters to go on as well, but I'll save fitting those until after the hallway has been plastered.