Towards the end of the film, the first few shots of the space rocket are of a completely metallic body. However, at the take-off, and immediately prior, the rocket has a white body.
One of Lady Despard's dogs relieves itself against Smallwood's boot, as he is refused admission by Simpson the butler. A small puddle is left on a flagstone. From a different angle, Smallwood is then seen wiping one boot against the other, but there is no puddle.
When on the train at the 1:34:30 mark, the Godminster Gazette newspaper headline mentioning Orbiston Parva has left the R out of Parva spelling it Pava.
At the "British Space Centre" on the fictitious island of Ultima Thule, the corridor sign for the Computer Wing displays the legend "Computor Wing". It can be seen again seven minutes later.
The sound of the organ heard at Rev Smallwood's church is too loud and rich for the small, hand-pumped console we see.