If we take a look at countries like Germany or the Netherlands we see a cat and mouse game where each parliament outlaws the latest psychedelics and then the psychedelic community unveils their new analogue or precursor. We can mark the years by small additions to the basic LSD molecule. We've gone from 1p-LSD and 1cp-LSD to 1V-LSD and now onto 1B-LSD. The stimulants and dissociatives communies seems to favour flouride, it's easy to and doesn't bind to much.
The UK law bans anything sold primarily for inducing psychotropic effects, while the scheduled substances sections at the end add very fair provisions for items commonly sold as food. That's why it's actually an exaggeration to say the law could affect the spicy food trade, as food trades are one of the explicit exemptions.