After Jai Mittal leaves the court in a car, we can see the same arch of the BMC building in the background twice.
When Jai Mittal got in the taxi, the last time he looked at his watch, it was around 10 am. After the accident happened, the taxi driver was taken to the police station, (around 33 minutes of the film), the clock at the police station was still around 10 am.
In the taxi, Nana applies the brakes, John falls forwards and still has his chain around his neck. In the next scene he remembers that he lost his chain during the incident.
When Raghav goes to the OHM vault he searches for Jai's file, in the file it states his locker is 9129 but as we see later in the film the locker number is actually 1129.
In the taxi scenes when they show a shot of Nana and John together there are cars behind but when John's close up is shown there are no cars.
The Old Gothic Building used as the Mumbai High Court is actually the St Xavier's Technical institute on Mahanagr Plaika Marg, Mumbai.
When Sonali Kulkarni buys tickets for Nasik she asks for two tickets for the 9 pm train but later when Nana Patekar is in John Abraham's house he says my wife is going to Nasik by the 11:30 pm train.