| Date | Study | StudyURL | Source | Website | Population | PopulationDensity | CountryId |
|---|---|---|---|---|---|---|---|
| 12/31/2016 | Official estimate (.xls) | http://www.ons.gov.uk/ons/rel/npp/national-population-projections/2014-based-projections/rft-table-a1-1.xls | Office for National Statistics | http://www.ons.gov.uk/ | 66000000 | United Kingdom |