Markus
Banned
Massive civil war and civil war without partition!
In other words, no difference to what happened IOTL.
@Grimm Reaper: Interesting info on the one way mass exodus.
And for a WW2-POD, how about a British-Indian victory over Japan in Burma and Malaya in 1942? It would help the UK´s prestige, most likely butterfly away "Quit India" which included a lot of Hindu-Muslim fighting.
This Jinnah character seens to have been a major driving force behind the partition but he was already dying of cancer. Delay the British departure from India to ~1950 -would it be possible?- and hope whoever suceeds him is more open to a United India.