Professor John Tulloch, who was injured in the London bombings, has criticised authorities who have said he must leave the country.
London Metropolitan University has set up a hot-line for students, following the news that it has had its visa licence revoked.
Immigration officers at Heathrow and Gatwick walk out over proposed changes to their pensions. The government say the strike's ineffective.
Only 11 immigrants volunteered to leave Britain after seeing the Government's now-scrapped "go home" vans, an evaluation report has revealed.
The broader pilot, which also included postcards in shop windows and adverts in newspapers, led to 60 voluntary departures. A further 65 cases are currently being progressed to departure.
In addition, the report reveals the phone number used in the near £10,000 campaign, dubbed Operation Vaken, received a total of 1,561 text messages - but 1,034 were hoaxes.
Around 17 hours of Home Office staff time were required to deal with the hoax messages, the report added.
The immigration enforcement campaign that included the now-scrapped "go home" vans led to 60 voluntary departures.
Operation Vaken, which took place between July 22 and August 22 in six London boroughs, saw mobile billboards take to the streets emblazoned with the words "go home or face arrest".
Immigration minister Mark Harper said the pilot, which also included postcards in shop windows and adverts in newspapers, cost £9,740.
Mr Harper claims the 60 voluntary departures represent a notional saving of £830,000 based on the average £15,000 cost of an enforced removal.
Last week, Home Secretary Theresa May admitted the vans were "too much of a blunt instrument" and will not be rolled out nationwide.
London based anti-racism campaigner Suresh Grover was outraged to receive a text from the UK Border Agency telling him he had no right to remain in the country, despite having a British passport and having been here since 1966.
His case follows a spate of similar complaints - as Ronke Phillips reports.
The Home Office has released a statement in defense of a text message campaign where a number of people incorrectly received messages telling them they had no right to remain in the UK.
– Home Office
"We are taking proactive steps to contact individuals who records show have no valid right to be in the UK, some of which date back to December 2008. We believe it is right to enforce the immigration rules.
"Out of thousands of people contacted by Capita, a small number have been found to have the right to be in the UK or an outstanding application. Anyone contacted in error has been asked to get in touch with Capita to update their records.”
An anti-racism campaigner said he was "absolutely shocked and quite horrified" to receive a text message from the Home Office warning him he "may not have leave to remain in the UK."
Suresh Grover, founder of The Monitoring Group, told The Independent, "I thought it wasn't meant for me. I came here with my parents in 1966, I was born in East Africa and have always had a British passport."
Mr Grover, who called the number on the text and spoke to someone at private contractor Capita, said: "The more I talked to the woman the angrier I got. She was asking for more personal information about me and was not telling me where she got my number.
"I think it's outrageous sending people random texts without knowing who they are sending them to ... it's horrific."
More than 100 people have complained to the Home Office after they were wrongly sent text messages accusing them of being illegal immigrants and telling them "to leave the UK", The Independent reported.
A Freedom of Information request submitted by anti-racism campaigner Suresh Grover - who also received the message - shows 39,100 individuals have been contacted in this way.
Of those, 103 have complained to the Home Office and 95 complained to Capita, the private contractor that issued the texts.
The Home Office said: "We have always been clear that this campaign was about encouraging illegal immigrants to leave the country voluntarily and was not targeted at particular racial or ethnic groups.
"In respect of the ASA's other findings, we can confirm that the poster will not be used again in its current format."
The Advertising Standards Authority said those who saw the poster would understand the claim "106 arrests last week in your area" to mean that during the previous week 106 people in the area - in which they saw the poster - had been arrested under suspicion of being in the UK illegally.
– Advertising Standards Authority
Because the data on which the claim was based related to a significant part of London north of the Thames rather than to the specific areas in which the poster was displayed.
[As] the data did not relate to the week prior to the campaign, we concluded the claim was misleading and had not been substantiated.
A Home Office campaign in London urging illegal immigrants to "go home" has been banned for using misleading arrest statistics. The campaign, which involved vans driving through six London boroughs in July and drew 224 complaints to the Advertising Standards Authority.
The Home Office has said it will reconsider future immigration campaigns after refugee organisations threatened legal action over its 'Go home or face arrest' adverts.
People who use the Refugee and Migrant Forum of East London (Ramfel), last month told the Home Office it had until August 8 to agree to ditch the "offensive" campaign or they would apply for a judicial review.
David Wood, the Home Office's director general for immigration enforcement has written to Deighton Pierce Glynn, stating:
[The] billboards stage of the operation has already ceased and the accompanying promotional material - leaflets, posters and adverts - does not refer to the number of arrests in the vicinity.
Instead, it sets out how an immigration offender can approach the Home Office without fear of arrest or detention. We do not consider it necessary to remove these latter campaign materials from public display and public premises.