Chapter 5 — When to talk to a GP, and what to declare to the DVLA

There's a blurry line between a personal mental health struggle and something that needs to be reported to the DVLA. For most drivers, a spell of low mood or acute stress doesn't require any contact with the agency. But section 92 of the Road Traffic Act 1988 places a legal duty on drivers to tell the DVLA about any condition that could affect their fitness to drive. Not doing so is a criminal offence, carrying a fine of up to £1,000 and further exposure if you're involved in a collision. Working out where that threshold sits means looking at both the clinical picture and how it actually affects your driving.

01The duty to disclose

The DVLA splits conditions into those that must be declared as soon as they're diagnosed, and those only worth reporting if they worsen or start to interfere with driving. For mental health, that potential to interfere is the test the agency applies. It's looking at cognitive impairment, slower reaction times, and side effects from medication such as drowsiness. Mild anxiety or depression won't usually need reporting on its own, but any condition causing significant memory loss, confusion or loss of consciousness must be declared straight away — as should any case where a GP or specialist has said the condition makes driving unsafe, even temporarily.

02Which conditions need declaring

The DVLA's list of notifiable mental health conditions is fairly specific. It includes, among others:

• Bipolar disorder.
• Schizophrenia or other psychotic illness.
• Severe depression that affects daily life or concentration.
• Any condition requiring hospital admission, whether voluntary or compulsory.
• Personality disorders.
• PTSD, where it affects driving ability.
• Chronic conditions affecting mood and cognition, such as dementia.

The process for cars and motorcycles is somewhat more lenient than for lorries and buses, which are held to a stricter medical standard given the size and consequences of those vehicles.

03What happens after you notify the DVLA

Notification for mental health conditions is usually done via the relevant medical questionnaire, after which the DVLA opens a period of medical review. This is often assumed to mean an immediate loss of licence, which isn't generally the case — a driver can usually keep driving while the review is under way, provided their licence is valid and no doctor has told them to stop. The DVLA's medical team will typically contact a GP or psychiatrist for an assessment, and may in some cases ask for an independent medical exam or a practical driving assessment.

Reviews generally end one of three ways. A driver may keep a full-duration licence if the condition is judged stable. A time-limited licence — one, two or three years — may be issued instead, with a further review due at the end of the term. Or, where the risk is judged too high, the licence is revoked. A revocation on medical grounds can be appealed to a magistrates' court, or a sheriff court in Scotland, within six months.

04Medication and the law

Psychotropic medication brings in a separate legal issue. Under section 5A of the Road Traffic Act 1988, it's an offence to drive with certain controlled drugs in your system above specified limits. That legislation is aimed mainly at illegal drugs, but it also covers prescription medicines including diazepam and other benzodiazepines. A driver taking medication as prescribed and not impaired by it may have a statutory medical defence — but impairment remains the test that matters. If you feel drowsy, dizzy or unable to concentrate because of medication, don't drive, regardless of whether it's prescribed legally. Check the patient information leaflet for the crossed-out car symbol or specific warnings.

05What insurers ask

Insurers and the DVLA operate on the principle of utmost good faith. Applications and renewals typically ask whether you have a medical condition that's been notified to the DVLA. Where the DVLA has been told and has allowed you to keep driving, on a full or time-limited basis, insurers generally cannot raise your premium or refuse cover purely because of the condition, a protection that sits under the Equality Act 2010. But failing to disclose a notifiable condition to either the DVLA or your insurer can void your policy entirely, leaving you personally liable for any claims and open to a driving-without-insurance charge.

06When to see a GP

The most straightforward way to manage all of this is an honest conversation with a GP. If concentration is slipping, reactions feel slower, or mood swings are starting to shape how you drive, that's worth a medical appointment rather than waiting to see what happens. A GP can advise on whether a condition meets the standard the DVLA applies, which often heads off unnecessary administrative trouble later. It's far better to have a condition documented and managed than to have a road incident reveal it after the fact.