This report from GLA Intelligence in September 2013 based on the 2011 Census shows that:
More than a third of Londoners were born outside the UK.
• Half of all migrants to the UK living in London in 2011 arrived since 2000, but more than a third of those had lived in the UK at least 20 years.
• The known patterns of migration to the UK for Caribbean-born residents are clear, with significant numbers arriving before 1971, though there was another, smaller influx in the 1990s, whereas the arrival dates of migrants currently in London born in India or Pakistan are more evenly spread, though nearly half of those born in India arrived in the UK since 2000.
• One in three of all Londoners born outside the UK arrived when they were aged 16-24. Nearly as many arrived aged 25-34 and a quarter were children when they arrived.
• While the number of immigrants from the United States and from Australia and the patterns of year of arrival were similar, those born in the United States were much more likely to have entered the UK as children than those born in Australia.
• Similar numbers of Asian and Black Londoners were born in the UK, but far more Asians were born outside the UK.
• Just over half of London residents born outside the UK used a language other than English as their main language. The percentage of those whose main language was not English, not surprisingly, increased with age at arrival in the UK.
• One in three Londoners born outside the UK but who arrived in the UK as children (aged under 16) did not have English as their main language, compared with more than half for all those arriving in the UK as adults, regardless of age.