Home Office minister James Brokenshire told the Daily Mail the government will take the "strongest possible action" against anyone found to be abusing the rules after a language school allegedly offered to fraudulently sell certificates to migrants.
The Home Office takes any allegation of fraud extremely seriously and we have already begun a full investigation. We will take the strongest possible action against anyone who is found to have abused the rules - including the possibility of criminal prosecutions for fraud.
This ESOL certificate is just one element of a wide range of evidence required by individuals applying for settlement and citizenship. Nobody can gain a UK visa on the strength of this qualification alone.
More top news
Brothers Andy and Jamie Murray have beaten Belgian pair David Goffin and Steve Darcis to take a 2-1 lead in the Davis Cup Final
Protesters gathered outside Downing Street to urge MPs to vote down plans to bomb the war-torn country
Strong winds, heavy rain and snow forecast across the UK