Can i file a divorce in India from outside India

I was married in India in 2013. It was a love marriage. We lived with in laws for a couple of years. However we both agreed before the marriage that we will live separately but near to in laws place. Fights started growing from there itself. My in laws are too orthodox. They still follow the rituals of treating separately for a girl in her periods n many more. So later me n husband started living separately in a same society but a different building. Initially it was ok but later we started fighting more freely due to the same interfering in laws. Meanwhile i got opportunity to fly to UK. Husband wasn't happy but still i took it. I felt free and liberated once i was out. It was for 4 months. Later our relationship was never the same and we started having physical fights. I am not at all sure of our relationship anymore. I don't want to have a kid in all this. I got onsite chance once more for 6 months this time ended up in more fights.i have already tried going to counsellors. That hasnt worked either. We have already discussed to get divorced multiple times. But qfter having fights he somehow convinced me for not having it. I cant say no is my biggest problem which has affected my life brutally. I am planning to runaway out of India. I am trying to find a job or if required education outside. Is it possible to give a legal notice just before flying and let the case runs later here?