I know of an excellent place to develop black and white film in Delhi, it was recommended to me by a friend who lives/works there, he is the head editor for AFP and took me to the lab, I developed over 80 rolls of tri-x and a small amount of slide and color film as well....it was a little expensive (for India), but much cheaper than San Francisco or Italy where I was headed to next, and the quality was amazing...actually, the prints that he made for me are on my
http://www.flickr.com/photos/22072877@N05/
...anyways, it was definetely worth it......and there is also a great photo store to buy film in central Delhi as well.....now, if I could just remember where these places are...I will send out an email to my friend and start looking at maps/notes from India and see what I can find.....as far as Mumbai (Bombay) goes, there is a really good photo store close to the Victoria train station, once again, I can find it, I just need to search a little......I can't speak for labs in Mumbai because I developed everything in Delhi, but I did do a tour of the photo stores in Mumbai and I was impressed.......one more thing...I had my shutter break on my m6ttl in Calcuta and someone on pnet recommended a Leica repair man in Mumbai, I called him from Calcuta and he told me to come on by....long story short, he did an excellent job on my camera and his shop looked very professional with Leica advertisements and the proper Leica tools....that and he repaired my camera in 24 hours...I found out later that he is on the Leica website for repairs/services (I think)...anyways...I need a little time to dig this info up (it is 2:10 a.m. in Bangkok now)..but I will get back to you and let you know about the lab and stores and where they are.......I love India.....
cheers, michael