The Office for National Statistics (ONS) – Official UK economic and social data http://www.statistics.gov.uk/.
Census Data collected every 10 years on demographic information http://www.statistics.gov.uk/census2001/census2001.asp
Social Trends – Annual publication – British population and changes in society and lifestyle http://www.statistics.gov.uk/downloads/theme_social/Social_Trends39/Social_Trends_39.pdf
Regional Trends – Annual demographic, social and economic data for the UK. Also includes population and social statistics for the EU http://www.statistics.gov.uk/StatBase/Product.asp?vlnk=14356
Official labour market statistics https://www.nomisweb.co.uk/Default.asp
Focus on – Online snapshots of social topics http://www.statistics.gov.uk/focuson.
Population Trends – Articles relating to population and social trends http://www.statistics.gov.uk/downloads/theme_population/Popular-Trends136.pdf
Communities and Local Government – Housing supply and demand http://www.communities.gov.uk/
International Labour Organisation – Provides worldwide [un]employment statistics http://laborsta.ilo.org/.
Organisation for Economic Co-Operation and Development – Publishes OECD Factbook 2008 Economic, Environmental and Social Statistics which containing statistics including migration, quality of life. http://lysander.sourceoecd.org/vl=1325881/cl=11/nw=1/rpsv/fact2008/
The Statistical Office of the European Communities Eurostat – Publishes statistical information on EU countries http://ec.europa.eu/eurostat.
United Nations – Compiles and publishes global statistical information – http://www.un.org/.
Press
Newspapers / Trade magazines
Highlight changes in social attitudes and publishes ‘special reports’ such as in the Financial Times http://www.ft.com/.
Trade Magazines and trade associations can provide an overall picture of the changes being experienced in a specific industry.
Keynote Reports on various topics which provide an insight into consumer behaviour http://www.keynote.co.uk/.
Ipsos MORI Environment Research Unit – attitudes towards various subjects http://www.ipsos-mori.com/
ACORN Demographics and lifestyles categorised into classes used for targeting http://www.caci.co.uk/acorn.
Economic and Social Research Council – Research into social and economic issues – http://www.esrc.ac.uk/.