THC - Cannabis
UK Class B Illegal Drug
Cannabis stands as the most commonly used illicit substance in the United Kingdom, whether for recreational or medical purposes. Legally, this drug can only be prescribed by the NHS or a registered private physician, and then, strictly for severe conditions where clear clinical benefits have been established. Cannabis THC is also the most common drug that is drug tested for.
Medical research and global attitudes regarding Cannabis use, suggest a potential future for its decriminalisation, with the UK's Green Party presently incorporating this stance within their political agenda. However, should decriminalisation occur, Cannabis would still be subject to widespread drug testing, akin to alcohol, owing to its potential impairments on activities such as driving, operating machinery, and workplace performance and productivity.
As such attempting to drive a vehicle after smoking Cannabis (medical or recreational) would still be illegal under UK drug and driving law.