The Government is to launch an advertising campaign next week warning hospitality employers of the stiff penalties they face for hiring illegal migrant workers.
UK managers face up to two years in prison or unlimited fines for every illegal individual they "knowingly" employ.
The Home Office is to run a three-week radio and newspaper campaign outlining a new immigration policy, which is due to come into effect on 29 February and includes biometric ID cards for foreign nationals.
Immigration minister Liam Byrne said: "Illegal working attracts illegal migrants and undercuts British wages. That's why we are determined to shut it down. The message is clear for employers - we will not tolerate illegal working."
The campaign initially targets the hospitality and road haulage industries, with the message: "If you hire illegal migrant workers you're as illegal as they are."
One ad shows a café called "Arrestaurante", while another reveals truck with the words "U R Nicked" emblazoned on the side.
Paula Higson, the Home Office's director of managed migration, said: "It is important that people see the Government is taking this very seriously. We are looking at really serious flouting of immigration laws. If you are a legitimate employer working hard then you want a level playing field."
By Daniel Thomas
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