Why isn’t there tax on aviation (or shipping) fuel?

Not necessarily have a watch of this for details on chilled/frozen produce transport. https://www.bbc.co.uk/iplayer/episode/m0008zkc/what-britain-buys-and-sells-in-a-day-series-1-1-fruit-and-veg

Mad how tied to Heathrow passenger flights the seafood industry is!!

Course, that was just a snapshot… how much other stuff is whisked around the world in the cargo hold?

And much of the waiting time at airports is due to loading non passenger related cargo?

(or is it just scheduled in in such a way as to not add to the delay of other activities such as fuelling etc)