Knowing very little about either photography or guns I finding it worthy of questioning if the single most significant bullet fired in decades (when very many bullets have been fired in the presence of cameras) is really the only one to be captured on camera like this. The open questions include why is the image apparently longer than "four-tenths of a foot", if the bullet would give off enough light to be detected, it the width of the image correct? In this day and age it is well worth questioning any image, particularly one without any cryptographic proof of origin which is easy to provide.

It is a semantic point but if I watch one film 100 times I have still only seen one film.

@RedGrittyBrick That is a very good point. The beeb first broadcast it after July 25th 2023 so the timing would fit.

With reference to the above comment, the more people who ask the more likely the response is.

@JonathanReez Thanks. I have been wondering what is the technical reason they cannot build a car seat that only takes up the space of an adult, they could be really expensive and still loads cheaper than buying and running a bigger car.

@Gábor Thanks, added.