Thanks very much for that, Newf.
I've been reading the absorbing book: "Norwich Since 1550", a series of essays edited by Carole Rawcliffe and Richard Wilson, and came across mention of these Censuses in rather a dull chapter on population trends.
Yes, occasionally one comes across fascinating individual Censuses apart from the National ones, including a couple for the villages of Kingston (whose name I've temporarily forgotten, but it's on line somewhere!) and Hinxton 1801 in my County of Cambridgeshire.
Might head up to Norwich some time soon to have a look in the Norfolk Record Office. That 1570-or-so survey of the Poor in Norwich sounds a detailed one - do they have copies of that at the N.R.O?
keith