Company Secretary

1. CA with CS
2. LL.B with CS
3. MBA finance with CS
With CS, you may go for MBA finance from a reputed and recognized university, institute or college. MBA finance will help you to grow and think as a finance professional. MBA finance will help you to develop administrative skills which when merged with your legal and compliance skills will put you to a different level altogether. With MBA finance qualification, you will be able to portray yourself as a professional having top management strategic, financial, business administration and business development knowledge and understanding along with compliance related knowledge and skill.
4. Certification programmes by ICSI
There are many courses launched by ICSI for CS students and members which they can pursue along with CS qualification. These courses are related to valuation, banking compliance, compliance management and risk governance in insurance sector, etc. All of them are certification course. You may find the details about this from the link below:
http://www.icsi.edu/CoursesOffered.aspx
5. NCFM Course
If you have interest in security market, you may go for NCFM course which is conducted by the National Stock Exchanges, Mumbai (NSE). NCFM is a very reputed short term course which provides good working knowledge in various segments of security market like derivative, merchant banking, share trading, forex, etc. This is also a very suitable course to be pursued along with CS course. Profile of CS is somewhere connected with security market and especially when you are working as a CS of a listed company. So, in that scenario, you can learn a lot about security market from NCFM course. There are various branches and certification course in NCFM and you may join any course as per your interest. To know more about NCFM course, kindly check the link below:
http://www.nseindia.com/education/content/about_ncfm.htm
6. Chartered Financial Analyst (CFA-India)
The course of Chartered Financial Analyst (CFA) is regulated by ICFAI (Institute of Chartered Financial Analysts of India) University. It is basically a distance education programme. This course is suitable for students who want to pursue a career in investment industry. CFA examinations are conducted four times a year. Very good career opportunities are available for qualified CFAs in financial organisation like banking, insurance, etc. So a CS may also consider this course as an additional course along with CS.

Corporate Law is quite different from the Company Secretary but can always bring in value to ones profile. Both the fields offers bright career opportunities but requires a lot of dedication and Hard work, so if you plan to pursue the two courses then this would require perfection in managing the two courses simultaneously.
There are very few institutes in India offering Corporate Law, which is a sub domain of a broader Law discipline I.e. Company Law. Institutes like Indian Law institute, NALSAR University, Acharya Nagarjuna University and a few others offer Corporate law courses.
You can also refer to the following link:
http://tinyurl.com/2caocc9