A protester holds a placard as she takes part in a demonstration outside the Home Office in central London on September 5, 2012 following the British government's decision to strip London Metropolitan University of its right to sponsor visas for overseas students. A London university on Monday announced it was launching legal action over the government's decision to revoke its right to sponsor visas, a move that threatens thousands of students with deportation.  London Metropolitan University had its Highly Trusted Status -- which allowed it to sponsor visas for students from outside the EU -- stripped by the UK Border Agency last week after a six-month audit found 'serious and systemic failings'.  AFP PHOTO/CARL COURT        (Photo credit should read CARL COURT/AFP/GettyImages)