At minute 57 in the movie, that takes place in the early twenties of XX century, when Eric Liddell is asked for an autograph he does not unscrew or remove any cap from the pen he uses. As all fountain pens have caps, he seems to be using a ballpoint pen because of a retractable tip type. Actually a patent for ball pen was only filed by László Bíró in UK in 1938.
In the 1924 the D'Oyly Carte Opera Company was not yet using the set and costume designs seen in this film. These designs were executed by Charles Ricketts for the 1926 production of "The Mikado" at the Savoy Theatre.
After Eric Liddle has given his speech at the highland gathering, there is a
brief glimpse of a boy whose trouser bottoms have no turn-ups (cuffs). As the
movie is set in the early 1920s, trousers without turn-ups wouldn't be seen
during this time period as they didn't come into fashion until much later. The
trouser legs also looked quite narrow and not in keeping with the style of the
1920s when they were much baggier.
At the end of the montage "He is an Englishman" Harold is cheered for by the audience, presumably as the soloist. But the solo from HMS Pinafore is for the boatswain, and Harold is dressed in superior officer's clothes.
When Eric Liddell is in the locker room getting ready, before going over to wish Abrahams luck, the camera is in a close up on him. He walks past a row of showers and the man in the final stall is seen facing the camera and holding a towel. The angle then switches to a far away shot and the man is now naked, showering with his back to the camera.
Just before the group of people enter the ball where the Prince of Wales is, we can see the camera and the camera man's shadows in the back of the lady in light green dress (the last one going inside). And the guy in the right side of the shot is looking at the camera too.
(at around 30 mins) Just before Abrams and Montague register at the Porters' Lodge of "Caius College, Cambridge 1919" their taxi is seen driving along a street and stopping at "the" College entrance. The street is Trinity Lane at the back of Caius College and the entrance is not that of Caius College but of Trinity Hall. Even the Trinity Hall crescent can be seen above the entrance.
In the first Cambridge scene, set in 1919, passengers are seen on the railway station's footbridge. In fact, pressure from 19th century Cambridge University leaders opposed to railways led to special conditions being imposed on the station before it was constructed, and one of these was that it must have no footbridges; although one was added later, it was demolished again in 1863 and since then the station has had level access to all platforms. In 2011 work began on a second platform which will be connected to the original platform by a pedestrian bridge.
In the scene where Harold Abrahams's coach is showing him Charles Paddock winning gold in the 1920 Olympics and why Jackson Scholz only got silver, the coach had it wrong. Scholz only came fourth and was not successful in winning silver. He did however win silver in 1924 at the Paris games.
The Parade of Nations is completely out of order. The US team is shown first, then the British team, then the French team (immediately preceded by Cuba). The official report of the Eighth Olympiad indicates that the Parade of Nations took place in French alphabetical order, beginning with South Africa (l'Afrique du Sud). Greece would not lead off the parade until 1928.
In 1924, the future Edward VIII/Duke of Windsor was Prince of Wales. At the meeting between "the committee" and Eric Liddell, Lord Birkenhead calls him "David". Some have assumed that this is a goof because he is played by David Yelland, but in fact the prince was known to his friends and family as David, and it is coincidence that an actor with the same name plays him.
The five-striped flag of the Republic of China is shown flying next to the US flag in the stadium. Although Chinese athletes did not compete in the Olympics until 1932, the Chinese flag was in fact hoisted at the 1924 Olympics. Several Chinese athletes marched in the opening ceremony but did not compete.
Before the 400 m race, the crowd can be heard chanting "U-S-A!" Although some have believed this to be an anachronism, it was in fact a common cheer for American teams at international sporting events in the early 20th century. For example, in Leni Riefenstahl's documentary series "Olympia", American spectators are heard using the "U-S-A!" chant to cheer on Jesse Owens at the 1936 Berlin Olympics.
In the 200 yards open championship race in the Highlands of Scotland, Eric Liddell starts the race two yards behind the other runners even though there was plenty of space for him on the starting line. Runners never started behind the others in races of only 200 yards.