What does the law say?

Cycle helmets are a regular topic of debate among cyclists, road safety campaigners and personal injury lawyers. Some see them as essential protection. Others worry that focusing too heavily on helmets shifts attention away from the bigger issue: making roads safer for vulnerable road users.

So, what is the law?

In the UK, cyclists are not legally required to wear a helmet. However, the Highway Code says cyclists should wear a cycle helmet that conforms to current regulations, is the correct size and is securely fastened. It also states that evidence suggests a correctly fitted helmet can reduce the risk of head injury in certain circumstances.

That means wearing a helmet is not compulsory, but it is recommended.

A recent reminder of why helmets matter

In June 2024, celebrity chef Gordon Ramsay shared that he had been involved in a serious cycling accident in Connecticut. He credited his helmet with helping protect him and urged other cyclists to wear one.

Stories like this are powerful because they show how quickly a normal ride can become a serious accident. While every collision is different, helmets are designed to reduce the force of certain impacts and may reduce the severity of head injuries.

How do cycle helmets work?

Cycle helmets are designed to absorb some of the force from an impact. The expanded polystyrene liner inside the helmet compresses when struck, helping to spread and reduce the energy passed through to the skull and brain.

However, helmets have limits. Once the liner has fully compressed, it cannot continue absorbing energy in the same way. This is why helmets should be replaced after a significant impact, even if the damage is not immediately obvious.

The argument for wearing a helmet

Many brain injury charities, medical professionals and road safety organisations support helmet use because of the protection helmets can offer in certain types of accident.

Headway, the brain injury charity, highlights a 2019 study using NHS England Trauma Audit and Research Network data. The study found that severe traumatic brain injury occurred in 47.6% of patients who were not wearing a helmet, compared with 19.1% of patients who were wearing one.

For many cyclists, that is the strongest argument in favour of wearing a helmet: it may reduce the risk or severity of a serious head injury.

The argument against making helmets compulsory

Some cycling groups are cautious about mandatory helmet laws. Their concern is not necessarily that helmets are useless, but that compulsion could discourage people from cycling and make cycling feel more dangerous or inaccessible than it is.

There is also research suggesting that driver behaviour can be affected by how cyclists appear. Research associated with the University of Bath found that, in some circumstances, drivers passed closer to cyclists who were wearing helmets. The commonly cited figure is around 8.5cm closer.

This is why the helmet debate is often more nuanced than “helmets good” or “helmets bad”. Helmets may help reduce injury in some accidents, but safer roads, better driver behaviour and proper passing distances are also essential.

Can you claim if you are not wearing a helmet?

Yes, you may still be able to make a cycling accident claim even if you were not wearing a helmet.

Not wearing a helmet does not automatically prevent you from claiming compensation. However, in some cases, particularly where a head injury is involved, a defendant or insurer may argue that the injuries would have been less serious if a helmet had been worn. That argument depends on the facts of the case and medical evidence.

At Two Wheel Claims, we help cyclists whether they were wearing a helmet or not. What matters is understanding how the accident happened, who was responsible, what injuries were caused and what evidence is available.