The British soldiers uniforms are all incorrect for the year 1902. They are wearing American style jackets and belts dating from the Second World War, while the medal ribbons everyone is wearing are for medals awarded for British service in the First World War.
At least one of the walls inside the "pharaoh's tomb" is obviously constructed from cement cinder blocks, a building material more suitable to 1950s suburbia than to ancient Egypt.
Beauchamp mistakenly describes a body drained of blood as "eviscerated", which means physically disemboweled. He should have described it as "exsanguinated".
In Ancient Egypt a cartouche was an oval shape containing the hieroglyphs for a personal name, not a stone tablet. Characters should instead be referring to the tablet as a tablet or a "stele". In addition, the tablet has too few hieroglyphs for the complex long sentences and information it is said to contain.