Do you have to tell your insurer about a medical cannabis prescription?
Insurance runs on disclosure. The rule that matters is not whether cannabis is involved but whether you answered the questions accurately — and an inaccurate answer can leave you uninsured at the worst possible moment.
The short answer
- Answer every question accurately. Careless or deliberate misrepresentation can void a policy.
- Most insurers ask about medication and conditions rather than about cannabis specifically.
- Motor insurers care about fitness to drive and about anything notifiable to the DVLA.
- Travel insurers need the underlying condition declared, or treatment abroad may not be covered.
- A refusal from one insurer is not the market. Specialist brokers exist for declared conditions.
What the law actually requires
For consumer insurance, you must take reasonable care not to make a misrepresentation. In practice that means answering the insurer's questions honestly and completely; you are not required to volunteer things they have not asked.
The consequences of getting it wrong depend on whether the misrepresentation was deliberate or careless. A deliberate one can allow the insurer to avoid the policy entirely and keep the premium. A careless one is treated more proportionately, but can still reduce or remove a payout.
The practical lesson is simple. If a form asks whether you take prescribed medication, or asks you to list your medicines or medical conditions, answer it fully. Do not decide for yourself that something is irrelevant.
What different insurers tend to ask
Different policies care about different things, and the question about cannabis is rarely asked directly. It is usually captured by a broader question about medication or conditions.
| Policy | What they usually ask | What to watch |
|---|---|---|
| Motor | Medical conditions affecting driving, DVLA notifications, prescribed medicines that may impair | Anything notifiable to the DVLA must be declared to both. A drug-driving conviction affects premiums heavily. |
| Travel | Pre-existing medical conditions and current medication | Declare the condition, not just the medicine. Undeclared conditions are a common reason claims fail abroad. |
| Life and critical illness | Full medical history, medication, and sometimes substance use | Underwriting may treat the underlying condition as the main factor. Be precise that it is prescribed. |
| Private medical | Pre-existing conditions, usually excluded | The condition being treated is likely already excluded; the medicine rarely changes that. |
Where a form asks about recreational drug use, a prescribed medicine is not recreational use — but say so clearly rather than answering no and leaving it ambiguous. If there is a free-text box, use it.
Practical steps
A little care at the application stage prevents most of the problems that arise at the claim stage.
- Answer questions about medication and conditions fully, naming the medicine as prescribed
- Keep a copy of what you declared, including screenshots of online forms
- If a question is ambiguous, ask the insurer in writing and keep the reply
- For travel, declare the condition as well as the medicine
- If declined, try a specialist broker — declared-condition markets exist
- Re-check at renewal; a change in treatment is a change in your circumstances
If an insurer refuses a claim on disclosure grounds and you believe you answered correctly, the Financial Ombudsman Service can review the decision free of charge.
One caveat before you rely on any of this
This is general information about how the rules on insurance disclosure work, not legal advice, and it cannot take account of your circumstances.
The law changes, enforcement practice varies, and the details of your own case matter. If something here could affect your licence, your job or your liberty, get advice from someone qualified to give it — a solicitor, your prescriber, or the relevant authority itself. Where we can point you at the primary source, we have.
Frequently asked questions
Do I have to tell my car insurer about a medical cannabis prescription?
You must answer their questions accurately. Motor insurers typically ask about medical conditions affecting driving, DVLA notifications and medicines that may impair. If any of those apply, declare it — non-disclosure can leave you uninsured.
Will it invalidate my travel insurance?
Not by itself, but an undeclared underlying condition may. Travel policies ask about pre-existing conditions and current medication; declare both. Also check that you can lawfully take the medicine to your destination.
Will it affect life insurance?
Underwriters generally focus on the underlying condition rather than the medicine. Be accurate and make clear that it is prescribed. A decline from one insurer does not mean the whole market will decline.
What if a form asks about recreational drug use?
A prescribed medicine is not recreational use, but say so explicitly rather than answering no and leaving it ambiguous. Use any free-text box to state that the medicine is prescribed by a specialist.
What if my claim is refused?
If you believe you answered the questions correctly, the Financial Ombudsman Service can review the insurer's decision at no cost to you.
Sources and further reading
Every factual statement on this page is drawn from the following public sources. Links open in a new tab and are not affiliated with Flora House.
- Consumer Insurance (Disclosure and Representations) Act 2012
- Financial Ombudsman Service
- GOV.UK: Driving and vehicles — medical conditions, disabilities and driving
- NICE guideline NG144: Cannabis-based medicinal products
- NHS: Medical cannabis (and cannabis oils)
- MHRA: The supply, manufacture, importation and distribution of unlicensed cannabis-based products for medicinal use