When Victoria and Abdul are riding in a carriage, snow starts, even though the trees are still in full leaf. In the next shot, the trees are bare.
At the first dinner, the servers stand behind the diners, holding trays of soup. Then the boy runs to the kitchen to announce they want the soup course. The waiters bring trays of soup into the dining room, and the movie cuts to the same shot of the waiters standing behind the diners with the same trays of soup.
When Victoria tells the court to have the decency to resign to her face, she is standing. In a brief shot, Victoria is sitting before appearing to stand again and asking if anyone wishes to resign.
When Victoria takes her household and family to visit the Karims in their cottage at Osborne, the Queen introduces her granddaughter Sophie as the Queen of Greece. Sophie became Queen of Greece in 1913.
Jane Spencer, the Baroness Churchill, died December 24, 1900, one month before Queen Victoria. She served as Lady of the Bedchamber from 1854 until her death, and was the longest-serving member of the Queen's personal household.
At the dinner scene, guests seem shocked that Queen Victoria eats so quickly. When their food is removed at the same time as hers, they protest that they aren't finished. In real life, Victoria was known to eat very quickly. Royal protocol dictated that courses were cleared as soon as she finished, so guests knew they would have to keep up with her if they wanted finish their food.
At the beginning of the film, Major Bigge is introduced as a member of the royal household of Windsor. Bigge was not a member of the royal family, which adopted the name Windsor in 1917. It's referring to his position in the royal household at Windsor Castle.
During the train ride, Victoria's son Bertie, born in 1841, claims to be 57 years old. The film begins in 1887, and continues through the following 14 years.
Victoria remarks to Abdul that "we" had too much champagne. The queen sometimes uses the "royal we", so it is not necessarily implied that Abdul drank.
Queen Victoria says she is the longest-reigning monarch in history. At the time, she was the longest-reigning monarch in British or English history (a record since surpassed by Elizabeth II). At the time, Louis XIV of France (1643-1715) was the world's longest-reigning monarch at 72 years, 110 days, though as he ascended to the throne at four years old and regents ruled for him until he came of age, so Victoria's claim is accurate if referring to reigning in her own right.
At least twice, Abdul refers to his home province as "Uttar Pradesh". That name was coined in 1950. At the time depicted in the movie, the area was called "United Provinces".
In the movie, Sir Henry Ponsonby, Queen Victoria's private secretary, is alive when she dies in January 1901. He died in 1895.
At the start, a Muslim call to prayer plays over a loudspeaker, which hadn't been invented in 1887.
In the beginning, when Abdul is called to the governor's office, a world map hanging on the wall behind the desk shows the British Empire. The map is from 1915 and doesn't reflect the empire's territorial extent in 1887, when the scene takes place.
When Victoria dies, her oldest grandchild, The Kaiser, wears a German uniform. In those days, nearly all royals went to great lengths to dress in honorary uniforms of their host country. He would have been in civilian clothes or a British uniform.
Even though Abdul is from India his accent sounds more like he is from Bangladesh than India.
Victoria says she has "almost a billion citizens". The people a monarch reigns over would be subjects, not citizens. Also, the size of the British Empire in 1900 was around 380 million people, significantly less than her claim.
Queen Victoria is told, "But mangoes only grow in India". Mangoes grow in all tropical and subtropical countries.
The man who announced Queen Victoria's death says she died at 6.30. He should have specified 6.30 in the evening.