Hadush Kebatu, an Ethiopian asylum seeker who was eventually returned home, was jailed for 12 months after being convicted of sexual assault in Epping.
Meanwhile, Kurdish migrant Mehmet Ogur was sentenced to serve seven years behind bars after raping an 18-year-old woman.
Ibrahim Alshafe, 26, from Egypt, and Abdulla Ahmadi, 26, from Iran, were also handed 21-year prison sentences after raping a woman on Brighton beach in October last year.
Self-described Palestinian Mohammed Abbas, who arrived on British shores in March, also carried out sex crimes against two young girls just days after being handed a £250,000 two-bedroom taxpayer-funded home in Cardiff.