Om Security Services
No. 166, Jessore Road, Rajbari
Kolkata- 700081, West Bengal (India)
Amal Security Services
No. 1, Deshyaprya Park Road
Kolkata- 700026, West Bengal (India)
Bharat Security & Intelligence Services
ShrikhanC/O Prafulla Adhikari Shrikhanda Chatterjee Para P.O. ? Panchpota (Near Narendrapur Railway Station) PS ?Sonarpur, Da Chatterjee Para Post,
Kolkata- 700152, West Bengal (India)
Command Security Service
751, Block A, Behind Jaya Cinema Hall, Lake Town, Near Shah Medical Shop
Kolkata- 700089, West Bengal (India)