Hello there!
Would it put you off buying a house if there was a chimney stack in the living room and bedrooms but they couldn't be used for a real fire (as they had been taken out fo the loft?)?
I know some people like the fireplace etc, but not many of us actually use it.
It's A 1920s Edwardian type of house, worth about £1.3-1.5m in London (but who knows for how long!).