LLB Thru Distance Education is being imparted by many Universities. But before you enrol in any Course, do ensure that :-
1. That the Distance Education Course is recognised by the Distance Education Council, New Delhi otherwise you will not be able to appear for Judicial Services Exams.
2. The Distance Education Case is recognised by the Bar Council of India otherwise you will not be able to practice.
In my view, Annamalai University, Chennai LLB thru Distnace Education is approved by DEC as well BCI. Please check with them before you enrol yourself. You can also check with National Law School, Bangalore.