A word of caution that may not apply to you but might do so to some else reading this thread at some point. This was a painfull experience which I wouldn't like anyone else to suffer.
I had to strip all the lath and plaster walls off my stone cottage as they were in poor condition and had ventilation wind passing from the copious underfloor ventilation into the roof space; there was therefore no - and I repeat NO insulation in the walls whatsoever. For the first couple of winters we literally cowered round the small coal burning fire. That part of the sob story over.
What I missed in removing the plasterwork in the first room was that all the plaster tags pushed through the laths when the plastering was originally done came off and went down the gap where the wind was coming up and bridged the dpc for the floor. Fortunately I spotted this before any damage was done but I had a very unpleasant task removing all this broken off plaster.
If you are doing something similar make sure that slips of plywood are put in place at the skirting level to prevent this.
Rob