If you are an applicant from outside the EU (as you are), then you have the option of a Skype interview if you reach the interview stage. You would of course still be welcome to attend the interview in person, but the college wouldn't be able to reimburse you for travelling such a long way and it's less likely to be feasible than for our domestic applicants! The content of a Skype interview would be exactly the same as a regular interview and our admissions team have lots of procedures in place to make sure they are as equal and fair as possible.
There is no age restriction for applying to Oxford - if you are over 21 in your application year then you would be considered a mature student, but would still be considered for undergraduate courses in the same way as younger applicants.
We have an incredibly diverse student population at LMH (one of the perks of being both a large and welcoming college), and Indian students are just one of many nationalities which make up the undergraduate community. International students also have their own representation in the JCR (Junior Common Room - like a student council) and the college is really good at listening to any specific concerns they may have. We also host a number of different cultural events each year - one of the most popular is the "World at LMH" food festival which is run by staff and students.
Hope this helps!