Its high time, All UK airports are private. Even a seaport in India is private.
Ultimately the airports are the property of ALL Citizens of India (not the fee previledged leftists), they through their elected representative (the govt) should decide whether to sell them or keep them.
I think its better to sell these airports. Govt should give the money to the poor as education vouchers so they can go to the best private schools and educate themselves.