Thanks sweetpea6 and aldobear for your clues. I ignored this answer when googling, because I'd hypnotised myself into thinking that I was looking for a 6-letter answer. Senior moment .........
Winnie I believe I have the same answer as you for 97. I was quite happy with it until doubts were raised over the significance of 'well' in the clue. It would have to be a word meaning 'well' in the middle of a word for 'old housing'. Maybe Neville Mizen is even trickier than we thought - or are we over-thinking it?