Cuppa - why all the question marks?
FYI - Yes, the house is rented out at present. I didn't say it was in a bad condition ("would need a complete makeover"?), because it's not, but that's what I would do personally if I was the buyer of such a property and wanted to make it my home. I have seen similar houses on the street after having a complete makeover ie attic conversion, inside walls knocked down, modern open staircases, marble floors, modern kitchen, surround sound, sleeping platforms, ceilings with downlighters, glass walls to let in more light at the back, etc etc and they look terrific. In other words, the buyer(s) would probably look on the house as a project to be enjoyed. I would imagine that is what a potential buyer would do anyway as the house is in such a good area for people working in the city.
Yes there is no central heating system as such, just wall mounted heaters with timers in all rooms and the tenant, who has lived there for 3 years, is very happy in the house. Mercman gave me the information I originally requested, thanks.