Poverty and Social Exclusion in the UK and EU, 2005-20

http://www.ons.gov.uk/ons/rel/household-income/poverty-and-social-exclusion-in-the-uk-and-eu/2005-2011/rpt–poverty-and-social-exclusion.html
New report from the UK Office of National statistics. The percentage of people who say they are unable to meet unexpected financial expenses has increased considerably since the start of the economic downturn, up from 26.6% in 2007 to 36.6% in 2011. The proportion of people unable to afford an annual holiday has also increased from 21.4% to 29.7% over this period.
Another good place for finding data and research is the Joseph Rowntree website: http://www.jrf.org.uk/publications/monitoring-poverty-2012
See their annual monitoring report on poverty and social exclusion.
For Europe wide comparisons see the free tables available on Eurostat: http://appsso.eurostat.ec.europa.eu/nui/show.do?dataset=ilc_li02&lang=en
And worldwide on the United Nations website: http://unstats.un.org/unsd/demographic/sconcerns/income/default.htm