Burma was seperated from British Raj in 1936.
Ceylon(Sri Lanka) was never a part of British Raj.
Sikkim's sovereignity is disputed, event though it was a princely state with British suzerainity.
My source includes them, regardless of how intergrated they were with what is now India, Bangladesh and Pakistan. Yes, Sikkim was a princely state, but most princely states in the subcontinent during this era had limited autonomy, such as Manipur and Hyderabad. Bhutan was a princely state, but it had more recognition and legitimacy than others.