The poster van carried the slogans: "In the UK illegally? Go home or face arrest." A second line on the advert claimed: "106 arrested in your area". It then encouraged illegal immigrants to text "home" to the number 78070.
The campaign attracted widespread criticism, including censure from the Business Secretary Vince Cable, who called it "stupid and offensive".
However, Downing Street insisted that it was working and that immigrants were volunteering to leave, although the Home Office did not provide figures.
The van travelled through Barnet, Hounslow, Barking and Dagenham, Ealing, Brent and Redbridge as part of a £10,000 pilot scheme, which ended at the end of last month.
This is how France seem to work, many believe this is not racist, this is telling people who are getting free housing, free money and living in a system everyone I know pays into for free, I think this a step in the right direction for the United Kingdom. In Scotland we don’t suffer this problem, in England it is very bad, perhaps the proper advert but worded wrong, but is it Racist? “Go Home” is the issue
In response to this the Civil Liberty movement pulled this van out
An ASA spokesman said: "I can confirm that the Advertising Standards Authority has launched a formal investigation into the Home Office 'Go Home' ad campaign following 60 complaints.
Chris Bryant MP, Labour's shadow immigration minister, said: "This is another embarrassing blow to a Government which continues to fail to deal with immigration.
"With more people absconding at the border and fewer illegal immigrants being returned, David Cameron and Theresa May can't even get the basics right, stumbling from one shambles to another.
"You've got to question the Government's competence. We need effective action on immigration not offensive stunts."
A Home Office spokesman said: "We can confirm that we are in contact with the Advertising Standards Authority over this investigation and will respond in due course."
Embarrassing or Correct? You decide, for me correct message, wrong way to go about it. This coalition government are starting to take a pounding from the media for anything and it is well known the brothers in arms, Prime Minister David Cameron and Deputy Prime Minster Nick Clegg don't see eye to eye on much, before the joined forces to allow the Conservative party the votes to take power the Lib Dems have since broken over 20 campaign promises while in with the snobs from Eton.