Not really, The British came to India with few benefits of their own
1. Better ships of the line with cannons
2. Guns that could fire much of the distance
3. Well disciplined army that would not panic when faced against numbers,
YES, of course the locals did help due to their internal politics., At the Battle of plassey, it was Siraj ud daulah vs the East india company, and then Mir Qasim the general of Siraj ud daulah, just went over to the british and became the new king of Bengal, everyone had their aspirations but the true aspirations of the british were not known by many. After all East India was just a company which was into doing business and the Army that it had was for its own protection against the French, the dutch and others. They had no local aspirations.. this was the view of the local population and kings and so the kings readily confided in these foreigners because they could get guns and if need be then this foreign force could be used to their benefit. Maybe it was this way for the East India company, but soon they saw themselves that they were managing disputes of many kings and that made them king maker, and they realised it and everything changed.
Most of the time, it was one king against another and the british supporting them and in return getting various advantages and lands for setting up their forts and bases and thus setting up the foundation for their own future empire