Kotwal Saab is the only action film Hrishikesh Mukherjee made. In 1980s it was action films trend so also he had launched Actor films like Auqat with Amitabh Bachchan and Laathi with Dharmendra. But both films worked. But in early 1980s he made 2 very successful films like Khubsurat & Rang Bhirangi.
Vijendra Ghatge signed the film but later was replaced by Raza Murad.
Hrishikesh Mukherjee's and Basu Chatterjee always made Social Films. But once they made different films like Kotwal Saab & Chakravuyuh respectively.
The only film Hrishikesh Mukherjee worked with Music Composer Ravindra Jain in this Film.
Shatrughan Sinha's character name is Bharat Prasad Sinha. This is his brother Bharat's real name.