A previously confidential report has revealed that as many as 1 in 12 people are living in London as an illegal migrant. The figures revealed that as many as 585,000 illegal migrants are living in the capital city. This news comes amid growing pressure on the government to cut illegal immigration, as it’s believed around 1 million people are in the UK illegally. The report, obtained by the Telegraph, shows the majority of illegal migrants entered the country on visitor or work visas before overstaying the allotted time.