Hi
From Hackney Archives website
'Census
P/J/Misc P/J/CW 124
Parish copies of the census 1811, 1821 and 1831.
Personal name indexes of the 1811 and 1821 census have been published by the East of London Family History Society.'
If you look at a census page for the national surviving C19th censuses the heading in the top left corner is 'parish or township of', followed by 'ecclesiastical district of'. Pre 1841 the survival of the national census is very variable with only some parishes in some areas surviving. They are held in local archives. From 1841 onwards most survive.
If you click on these websites you will see an example of the 1801 and the 1821 census.
http://www.nwkfhs.org.uk/dartfordcensus.htmThis example for Hendon in 1821 is giving a little more information on some occupations (self-employed) not just a tally with the usual catch all for the rest - labourer. Normally it should just be a generally tally until the 1831 census as in the Dartford example given above.
http://www.british-genealogy.com/census-sources/sample-1821-hendon-census-london.htmlFrom a reply for another post about Hackney censuses on Rootschat the early Hackney censuses are giving some extra details on occupation similar to the Hendon census possibly even for anyone defined as 'labourer'.
'1821
Taplin Will Orchard St Well St brushmaker 6 males 4 females'As most of the workers at the Hackney crepe factory were women they are far less likely to be heads of household so will just be shown as a tally number.
'Local expertise perhaps contributed to the choice of Hackney Wick for a factory by Leny Smith, who from 1787 was leased 31 a.with a tobacco or snuff mill, previously a fullingmill, and who had a London office by 1791. Described as a silk throwster and later as a crepe manufacturer, he or his son Leny Deighton Smith was the country's largest producer in1811, with a mainly female workforce of 600-700 at Hackney Wick'http://www.british-history.ac.uk/report.aspx?compid=22708Regards
Valda