DVLA Blood Pressure Limits for Drivers: What You Need to Know

Blood pressure and driving: what the DVLA guidance says

The DVLA’s guidance sets different rules for car and motorcycle drivers, known as Group 1, and bus and lorry drivers, known as Group 2. It distinguishes ordinary high blood pressure from a diagnosis of malignant hypertension. For Group 2, it also uses a consistency condition for the resting blood pressure threshold. These distinctions matter: the guidance does not set one shared threshold for both groups or say that every high reading has the same consequence.

This guide summarises the supplied DVLA guidance and the blood-pressure field on the D4 form. It explains the stated driving and notification conditions, and where to find the official wording. It does not establish how a particular person should interpret a reading or whether they are personally fit to drive. For those questions, consult the relevant official guidance and a qualified health professional.

Group 1: car and motorcycle

For a Group 1 car or motorcycle licence, the public DVLA page says you do not need to tell DVLA if you have high blood pressure. It gives an important exception: you must stop driving if a doctor says you have malignant hypertension, described there as a sudden rise in blood pressure, also known as accelerated hypertension. You can drive again when a doctor confirms that the condition is well controlled.

The DVLA’s cardiovascular guidance also says a Group 1 driver must not drive if diagnosed with malignant hypertension until the condition has been effectively treated or controlled. It says the driver need not notify DVLA in this exception. That guidance defines malignant hypertension as systolic blood pressure of 180 mmHg or higher, or diastolic blood pressure of 110 mmHg or higher, associated with evidence of progressive organ damage.

The ordinary Group 1 guidance is not the Group 2 numerical rule. The supplied passages do not give Group 1 drivers a general 180/100 threshold, say that symptoms are the only exception, or describe routine blood-pressure checks at licence renewal. They address high blood pressure generally and set out the specific malignant-hypertension exception. Read the official DVLA cardiovascular guidance for the professional guidance, alongside the public high blood pressure and driving page.

Group 2: bus and lorry

For Group 2 bus and lorry licences, the public DVLA page says drivers do not need to tell DVLA if their blood pressure is consistently below 180/100 mmHg, and they can keep driving. It says a driver must stop driving and tell DVLA if blood pressure is consistently above 180/100 mmHg, or if a doctor says they have malignant hypertension. It also says a driver can drive again when a doctor confirms that the condition is well controlled.

The cardiovascular guidance expresses the threshold as resting blood pressure that is consistently 180 mmHg or higher systolic and/or 100 mmHg or more diastolic. It says drivers must not drive and must notify DVLA when that condition applies, or if they are diagnosed with malignant hypertension. The guidance states that a driver may be relicensed or licensed after blood pressure is controlled, provided treatment has no side-effects that affect, or are likely to affect, safe driving.

The professional and public pages phrase the threshold differently. The cardiovascular guidance explicitly includes systolic readings at 180 mmHg or higher and diastolic readings at 100 mmHg or more. The public page says consistently below 180/100 mmHg for driving without notification, and consistently above 180/100 mmHg for stopping and notifying. If a reading is at or around these figures, consult both official pages rather than treating a shortened summary as a personal decision. The supplied text does not support saying that a licence application or renewal is automatically refused because of a reading, or that a single reading determines the outcome.

The guidance concerns Group 2 bus and lorry licensing. It does not provide age-based medical or licence renewal schedules in the supplied passages. Do not infer how often a particular driver needs a medical from the blood-pressure rules alone.

What the D4 form says about the reading

The supplied D4 medical examination report excerpt contains one instruction about blood pressure: “Please record today’s best resting blood pressure reading.” This establishes that the form asks for today’s best resting reading. It does not explain how to obtain that reading, require or describe repeat readings, define a pass or fail value, or say that the D4 reading alone decides a licence application. It also does not describe what an examiner should do if a reading is elevated.

The D4 excerpt is a form field, not a substitute for the DVLA’s driving guidance. The Group 2 conditions described above come from the cardiovascular and public DVLA pages. Keep those different source roles clear when reading the materials: the D4 excerpt tells you what is recorded on the form; the guidance pages state the driving and notification conditions.

You can view the supplied D4 medical examination report for a Group 2 licence to see the field in context. The excerpt supports only the wording of the field, not additional examination procedures, appointment preparation advice, or an individual licensing outcome.

Medication and safe driving

The cardiovascular guidance says Group 2 drivers may be relicensed or licensed after blood pressure is controlled, provided there are no treatment side-effects that affect or are likely to affect safe driving. This is a qualification about treatment side-effects within the stated licensing guidance. It does not establish that medication itself automatically prevents someone from holding a Group 2 licence, nor does it support saying that the reading alone is all that matters.

The supplied passages do not give instructions about starting, stopping, changing, or timing medication. They also do not offer personal treatment advice. Do not use this summary to make a medication decision. For the driving rules, consult the DVLA pages; for questions about your treatment or health, seek advice from an appropriate health professional.

How to use the official guidance

First identify which licence group applies: Group 1 is car and motorcycle, while Group 2 is bus and lorry. Then read the section for that group on the public DVLA page. If you need the professional wording, including the Group 2 systolic and diastolic thresholds and the treatment side-effect qualification, consult the cardiovascular guidance as well.

For Group 1, focus on the malignant-hypertension exception and the guidance about when driving may resume. For Group 2, note both the consistency condition and the instruction to stop driving and notify DVLA at the stated threshold or after a diagnosis of malignant hypertension. The supplied material describes driving conditions and notification requirements; it does not describe every application process, medical examination practice, or personal case.

The D4 form excerpt has a narrower purpose. It asks for today’s best resting blood pressure reading. Do not treat that field as proof of a threshold, as an account of repeat-reading procedures, or as a promise about whether DVLA will grant or renew a licence. For current wording, use the official pages linked in this guide, and consider the full context of each source rather than relying on an isolated figure.

Sources

1. gov.ukCardiovascular disorders: assessing fitness to drive(accessed 2026-10-05)
2. gov.ukHigh blood pressure (hypertension) and driving(accessed 2026-10-05)
3. dvlaMedical examination report for a Group 2 (lorry or bus) licence(accessed 2026-10-05)