galv said:the previous owner assures me they were fitted by an electrician
How high are the ceilings? I am just thinking, if you have high ceilings (I know houses with 12 foot ceilings) then is there a possibility that a spark fitted metal fittings on the understanding that no-one can reach them? Perhaps one of the professional sparks here could answer this.
I know how hard it is to find cash when you have just bought a place, but if the wiring is earth-free perhaps you should make a rewire Number One priority before anything cosmetic?