In the UK, the legal boundary is not based on percentage strength but on total THC content. Any vape product that contains more than 1 mg of THC in its container is considered illegal unless prescribed. Products below this limit are classed as compliant and can be sold to consumers.
Why the 1 mg rule matters
Some people confuse the UK rule with the EU hemp limit of 0.2% THC. This is incorrect. The UK’s consumer law focuses only on the total amount of THC in a product. That means even a large bottle must still stay under 1 mg overall. Anything above that becomes a controlled substance.
