Census Returns

FreeCEN
Project to provide a "free-to-view" online searchable database of the 19th century UK census returns.

FamilySearch.org
LDS Family History and Genealogy Records, including the free 1881 census.

Genes Re-united
Some UK census returns.

ScotlandsPeople
Official government source for Scottish genealogy, census and family research.

www.Ancestry.co.uk
Census returns, message board, tree building and other resources.
1841 England Census
1851 England Census
1861 England Census
1871 England Census
1881 England Census
1891 England Census
1901 England Census

Census Finder
Directory of links to transcribed census returns in the UK.

Family Records Centre
The Family Records Centre (FRC) is jointly run by the General Register Office (GRO) and The National Archives. Gives advice on how to obtain census records.

Findmypast
Access to various census returns and England and Wales BMD registers.

Census Online
Directory of links to transcribed census returns. Some UK.