Regulated cannabis goes through testing and traceability to ensure consistent...

https://wiki-triod.win/index.php/How_Can_I_Verify_What%E2%80%99s_in_a_CBD_Oil_in_the_UK%3F

Regulated cannabis goes through testing and traceability to ensure consistent potency and safety. Unregulated products don’t have these checks, so their strength can vary, and they might contain harmful stuff like mould or pesticides