Career Advice Requests Question:

I am currently working as a Systems Engineer with a CMMi Level 5 company with few hundreds of strength. Now I have plans to move into Information Security Consultant career in big companies like IBM,ACS, Wipro etc.
But, the draw back with me is I DONT HAVE A DEGREE. I could not complete my graduation due to some personal reasons but, I DO HAVE CERTIFICATIONS LIKE SECURITY PLUS, CEH and knowledge about OS, Networks etc.
But, I am worried whether big companies as i stated above reject me due to lack of degree.
Please help me if i can confidantly apply to jobs in those companies. Mean while i have plans to complete my degree in near future?