Factual error: During the Jousting all the knights fail to use their lances correctly by putting them across the horse's neck, instead they just attack each other on the lance arm.
Factual error: When the ambulance arrives the policeman, at the crash scene, is wearing a City of London Police helmet (different from the Met) yet he is in a Metropolitan Police area.
Factual error: The song that Bo and the others use to trick Abdul into thinking there are reinforcements is "Durch die Grune Heide", a marching song used during the Second World War. However, the film is set in 1906.