Your Rights as a Medical Cannabis Patient in the UK

Introduction

Medical cannabis has been legally prescribable in the UK since November 2018, yet many patients remain uncertain about their rights. Can your employer dismiss you for taking prescribed cannabis? What happens if police stop you? Can the NHS refuse to treat you? This guide answers the most common questions about the rights of UK medical cannabis patients.

Your Rights at Work

One of the most common concerns for medical cannabis patients is the impact on their employment. The key points are:

Disclosure: You are not legally required to disclose a medical cannabis prescription to your employer unless your employment contract specifically requires you to disclose all prescription medications, or your role involves safety-critical activities (such as driving, operating heavy machinery, or working in healthcare).

Drug testing: Many employers conduct drug tests, particularly in safety-critical industries. THC can be detected in urine for up to 30 days after last use, and in hair for up to 90 days. A positive drug test does not prove impairment at the time of testing. However, employers may still take disciplinary action based on a positive test, even if you hold a valid prescription. If you are in a safety-critical role, discuss this with your prescribing clinician before starting treatment.

Disability discrimination: If your underlying condition (for which cannabis is prescribed) constitutes a disability under the Equality Act 2010, your employer has a duty to make reasonable adjustments. However, this does not extend to requiring your employer to accommodate impairment caused by THC.

The 2026 NPCC guidance: The National Police Chiefs' Council's 2026 guidance clarified that medical cannabis patients should not be treated as criminal suspects by police. This guidance is relevant to workplace situations involving security personnel or workplace investigations.

Your Rights with Police

If you are stopped by police while carrying medical cannabis:

• You have the right to explain that you hold a valid prescription

• Carry your prescription documentation and a letter from your clinician at all times

• The 2026 NPCC guidance instructs officers to verify the prescription before taking any action

• If police seize your medication, they should return it once the prescription is verified

You should always cooperate with police and avoid any behaviour that could be interpreted as obstructive.

Your Rights at the Pharmacy

Licensed pharmacies dispensing CBMPs are regulated by the MHRA. You have the right to:

• Receive your medication in the correct form and dose as prescribed

• Receive clear information about your medication, including dosage instructions and potential side effects

• Have your prescription treated with the same confidentiality as any other prescription medication

• Complain to the pharmacy or the General Pharmaceutical Council (GPhC) if you believe your rights have been breached

Your Rights in NHS Settings

The NHS does not routinely prescribe medical cannabis, but NHS clinicians are not permitted to refuse to treat you because you use prescribed cannabis. You have the right to:

• Receive NHS care for your underlying condition, regardless of your cannabis prescription

• Have your cannabis prescription taken into account when NHS clinicians are considering drug interactions or treatment plans

• Refuse to disclose your cannabis prescription to NHS staff, although disclosure is generally in your best clinical interest

Your Rights to Privacy

Your medical cannabis prescription is subject to the same confidentiality protections as any other prescription. Your GP, employer, or insurer cannot access your prescription records without your consent, except in very limited circumstances defined by law.

Insurance: Some insurers may ask about prescription medications on application forms. Failure to disclose a material fact (including a prescription that could affect your risk profile) may invalidate your policy. Check your policy terms carefully and seek advice if you are unsure.

Conclusion

UK medical cannabis patients have clear legal rights, but navigating them in practice — particularly in employment and police interactions — can be complex. CPGUK is here to provide free, confidential guidance on your rights as a patient and to help you understand how to protect yourself in any situation.