ID This Old British Detective TV Show?

I have very dim memories of this, but there was a British TV series shown in the early 1960’s here. It feature two police detectives (London police dept.?). One was an older british man-he wore glasses and smoked a pipe. The younger man was of indian or pakistani extraction, and drove the car. I tried the IMDB, but not knowing the name of the series, i got nowhere. Can anyone help me out?