13See www.ifs.org.uk/ELSA
14See www.ons.gov.uk/ons/guide-method/user-guidance/longitudinal-study/index.html
15See www.worldvaluessurvey.org/wvs.jsp
16See nesstar.ukdataservice.ac.uk/webview
17See http://ukdataservice.ac.uk/get-data/key-data.aspx
18See www.natcen.ac.uk/our-research/research/british-social-attitudes
19See www.ons.gov.uk/ons/about-ons/get-involved/taking-part-in-a-survey/information-for-households/a-to-z-of-household-and-individual-surveys/crime-survey-for-england---wales/index.html
20See http://ukdataservice.ac.uk
21See http://securedata.data-archive.ac.uk
22See www.hmrc.gov.uk/datalab
23See www.justice.gov.uk/justice-data-lab
24See www.adls.ac.uk
25See http://data.gov.uk/ and also the Open Data Institute www.theodi.org
26See www.cls.ioe.ac.uk/default.aspx
27See www.adls.ac.uk/dwp
28See www.education.gov.uk/ilsype/workspaces/public/wiki/Welcome
29See www.gov.uk/government/collections/school-census
30See www.esrc.ac.uk/_images/ADT-Improving-Access-for-Research-and-Policy_tcm8-24462.pdf
31See www.ihdln.org
32See www.ico.gov.uk/for_organisations/freedom_of_information/guide/refusing_a_request.aspx
33See www.ico.org.uk/news/blog/2013/freedom-of-information-the-next-generation
34See, for example, the Smart Steps service: http://blog.digital.telefonica.com/?press-release=telefonica-dynamic-insights-launches-smart-steps-in-the-uk
35See www.everydaysexism.com/; www.bbc.co.uk/news/uk-21520385
36See http://technorati.com/social-media/article/uk-police-in-twitter-experiment
37See www.unglobalpulse.org
38See http://scid-project.org/about/summary
39See www.ons.gov.uk/ons/guide-method/census/2011/index.html
40See www.ons.gov.uk/ons/about-ons/get-involved/taking-part-in-a-survey/information-for-households/a-to-z-of-household-and-individual-surveys/labour-force-survey/index.html
41See www.ons.gov.uk/ons/about-ons/what-we-do/programmes---projects/beyond-2011/index.html
42See Duncan et al. (2011) for a recent review of this topic.
43See www.openstreetmap.org/#map=5/54.910/-3.432
44See www.neighbourhood.statistics.gov.uk/dissemination
45See www.netmums.com/family-food/guide-to-cooking-on-a-budget/cooking-on-a-budget
46See www.gov.uk/government/collections/family-resources-survey--2
47See www.esds.ac.uk/findingData/snDescription.asp?sn=4803
48Though evidence suggests that this access is reliant on established relationships between commercial organizations and academics (Elliot et al. 2013).
49See www.dunnhumby.com
50www.caci.co.uk
51See data.gov.uk/dataset/health_survey_for_england
52See www.ifs.org.uk/ELSA
53See www.adls.ac.uk/safe-researcher-training
54www.ukbiobank.ac.uk
55See www.cls.ioe.ac.uk/default.aspx
56See www.britainsdna.com
57See www.google.org/flutrends
58Also see www.diygenomics.org/; http://genomera.com
59See www.cls.ioe.ac.uk/default.aspx
60See www.education.gov.uk/ilsype/workspaces/public/wiki/Welcome
61See www.gov.uk/government/collections/school-census
62See www.natcen.ac.uk/our-research/research/british-social-attitudes
63See www.understandingsociety.ac.uk/about
64See www.europeansocialsurvey.org
65See www.worldvaluessurvey.org/wvs.jsp
66See www.cso.ie/en/silc/abouttheeu-silc
67See http://yougov.co.uk
68It is notable that YouGov is also developing a sample frame of Twitter users linked with panel members.
69See Facebook (2012) Annual Report www.sec.gov/Archives/edgar/data/1326801/000119312512325997/d371464d10q.htm#tx371464_14
70According to the BBC, Facebook has more than 83 million illegitimate accounts. See www.bbc.co.uk/news/technology-19093078
71See Ding, J. (2013) ‘Twitter underground economy still going strong’. www.net-security.org/article.php?id=1859. Also see ‘Twitter Bot Tests Limits of Social Authenticity’, Social Media Today. www.socialmediatoday.com/content/twitter-bot-tests-limits-social-authenticity. See also the development of so-called ‘click farms’. Aurther, C. (2013) ‘How low-paid workers at ‘click farms’ create appearance of online popularity’. Guardian, August 2013 www.theguardian.com/technology/2013/aug/02/click-farms-appearance-online-popularity
72See, for example, www.mediahelpingmedia.org/training-resources/social-networking/402-trusting-tweets-a-guide-for-journalists
73See http://wstweb1.ecs.soton.ac.uk
74See www.telegraph.co.uk/news/worldnews/europe/norway/10236246/Norwegian-Prime-Ministers-secret-taxi-shift.html
75See, for example, www.britishpollingcouncil.org
76Though see the Data Journalism Handbook initiative (Gray et al., 2012).
77For further discussion see RCUK Code of Good Practice (2009) and the Research Ethics Guidebook www.ethicsguidebook.ac.uk and www.methods.manchester.ac.uk/resources/ethics/externalguidance/index.shtml
78Achieving reliability when coding unstructured data has always been difficult so there is nothing new here, except perhaps that new data sources often generate large quantities of unstructured data.
79Tim Berners-Lee has famously predicted that Web 3.0 will be the web of linked data (www.ted.com/talks/tim_berners_lee_on_the_next_web.html). If his prediction is accurate, then we can expect the transformative