Language certificates that offer a gateway to British citizenship are being sold illegally for £500, according to an investigation by the Daily Mail.
The newspaper claims that Learn Pass Succeed, a London language school, offers migrants a "guaranteed pass" on the Entry 3 Level ESOL exam, with staff allegedly taking the tests in place of applicants who are not even required to attend.
The exams are designed to test migrants' ability to speak English to a basic level and are a requirement for anyone who wishes to apply to be a British citizen
The Home Office has announced an urgent investigation in response to the claims, while the school has since been suspended by the examining body, the Mail reports.
More top news
Pensioner Ronald Volante was dead by the time paramedics got to him after his 999 call was classed as 'low priority'.
Here's what we know about the prison riot that has left as many as 50 people dead in north-eastern Mexico.
Ola Jordan broke her leg and Marcus Brigstocke couldn't work for a year after he injured himself - but they'd both go back on the show.