Going back to college?

Hi guys, quick question;

Looking to go back to college in September 2013 to do a BTEC Level 3 course (2yrs). I'm on IS and DLA and a mature student. My provisional enquiries have suggested this type of course is free and won't effect my benefits, is this correct can you tell me?

I don't mind losing benefits at all if I can apply for student loans but I can't do this for a level 3 course and I don't meet the criteria for a higher education course so I'm stuffed if I lose money.

Can anyone with experience in the field tell me how it works with level 3 courses at college and benefits?

I really appreciate any responses.

Thanks.