Any mileage in attacking it from the ceiling below? Kinda feels like cutting out a wedge of plaster then doing the work from underneath might actually be easier. Ceiling finish is shite too so a bit of money spent fixing that up wouldn't be quite so bad as a whole new floor just to move a radiator.
(it's possible the ceiling isn't original, it's been deprived of any texturing and decoration. But then there's a chance it might be lath and plaster in which case, no dice.)
Don't forget to anticipate a load of crap coming down with the ceiling -deliberately added ashey stuff for mass as well as randomly accumulated crap that's fallen through the floorboards over the decades.
Any mileage in attacking it from the ceiling below? Kinda feels like cutting out a wedge of plaster then doing the work from underneath might actually be easier. Ceiling finish is shite too so a bit of money spent fixing that up wouldn't be quite so bad as a whole new floor just to move a radiator.
(it's possible the ceiling isn't original, it's been deprived of any texturing and decoration. But then there's a chance it might be lath and plaster in which case, no dice.)