I want to speak to few top Security Contractors for guarding our various premises

Hi, U K Nair!

Hopefully, someone will come along who has experience with a security angency in the area about which you're asking.

In the meantime, you might want to click on the following search.

Security Agency Pune - Google Search (http://www.google.com/search?hl=en&source=hp&q=Security+Agency+Pune&aq=f&aqi=&oq=)

Thanks!