I have not mentioned immigration once Jim.

Guardian two days ago,

"Population growth was the greatest in southern and eastern England, at 1.08% and 0.92% respectively. London had the highest growth, with population in the capital up 1.45%, a result of 82,400 more births than deaths and the highest net international migration of all regions at 107,400.

The estimated population of England as of mid-2014 was 54.3 million, up 0.84%; Scotland was 5.3 million, up 0.37%; Wales was 3.1 million, up 0.31%; and Northern Ireland was 1.8 million, up 0.59%. No country of the UK or region of England witnessed population decline."

"Simon Ross, the chief executive of Population Matters, the UK's leading charity working on population and sustainability issues, said the ONS estimates were a warning of the urgency of attempting to to reduce population growth.

"We are all affected adversely by the rapid population growth of recent decades," Ross said. "Examples include pressure on housing and public services to the environment and climate change. It's time we addressed the population problem, and find ways to live sustainably and happily in the long-term."
http://www.theguardian.com/uk-news/2015/jun/25/uk-population-at-record-high-with-net-migration-the-biggest-driver