Hi Folks,
I have started removing the concrete from the stone wall under the stairs again. I did a bit of work on it on Sunday. I exposed an area where I thought the old window aperture was expecting to find the edge of the window but I just found more stone. I think they just used some old bricks to fill a void in the wall before they rendered over with concrete.
This will probably be a nice wall when I repoint it but I will probably paint over it with line wash. This should allow the wall to breath and inhibit any mould.
Sorry no photos I was so busy doing that I forgot to take any.
KBO