Brazil, but not Belize, is marked as part of the British Empire in the large map on the meeting hall. Brazil was never a colony, protectorate or a client state of the UK, unlike Belize.
The map reads "The sun never sets on the English Empire" , but it was universally called the British Empire at this time.
Some of the British officers have a name tape on their uniforms with their surname, but this was not done until the 1950s, and even today is only done by a small number of British units.
When Alluri Sitarama Raju is bitten by a snake, English subtitles refer to the snake as a banded krait. The snake pictured is a solid red color, where banded kraits are striped yellow and black.
During the prison break sequence near the end of the film, the heroes frequently fire more than one bullet from their bolt-action rifles without cycling the bolt.
The British base in the opening scene is flying the Union Jack upside down.
Jennifer uses a camera when she went to the market with Bheem. This model was from Yashica, a Japanese twin lens reflex camera brand in which model shown was released around the early 1960s.
At several points when cartridges are being loaded into bolt action rifles, you can see that the cartridges are "dummy" rounds with fluted brass.
As Governor Buxton drives to the site of Bheem's flogging, there is a Union Jack on the front of his car. It is obviously a modern one made of plastic which would not have existed at the time.
On the map of the British Empire it shows Great Lakes, New England, Brazil, French Equatorial Africa, Italian Tripolitania, Belgian Congo, Ethiopia, French East Africa, Italian Somali and Spanish Equatorial Guinea and French Syria; being apart of the British Empire but in real life (The film takes place in 1920) all those colonies I have mention weren't even apart of the Empire they could have easily searched it up (a mistake that could have easily been fixed).
Governor Scott, a man with a luscious head of hair can be seen in a brief scene in the forest with Ram's father as a balding extra.