Substances which seem to be Exempt from the Psychoactive Substances Act 2016
When the psychoactive substances act came in to force, retailers(based in the UK) were forced to stop selling any psychoactive substance. Many closed down, but some chose to stay open, stop selling psycoactive substances but continued to sell substances that technically fall outside of the ban, but are still drugs, could be made into psycoactive substances and/or are psychoactive substances but could be used for legitimate purposes.

Hawian Baby Woodrose Seeds

Fly Agaric

Amyl Nitrate (poppers)

Acetildenafil

Homosildenafil

Cannabidiol (CBD)

Yopo Seeds

Cannabis Seeds

Betel Nut

Nitrous Oxide