The number of people living in Britain is projected to rise from 64.6 million in mid-2014 to 74.3 million in 2039
http://www.theguardian.com/world/2015/oct/29/uk-population-expected-to-rise-by-almost-10-million-in-25-years
http://www.ons.gov.uk/ons/rel/npp/national-population-projections/2014-based-projections/stb-npp-2014-based-projections.html#tab-Main-points
