Causing serious injury by dangerous driving
SPECIALIST DEFENCE FOR DRIVERS AND OPERATORS FACING INVESTIGATION OR PROSECUTION.
Causing serious injury by dangerous driving is one of the most serious non-fatal motoring offences in England and Wales. Unlike a standard dangerous driving allegation, the prosecution must prove not only that the driving was dangerous, but also that it caused serious injury to another person. This additional requirement means that medical evidence, causation and the nature of the injuries become central to the case.
Drivers convicted of Causing serious injury by dangerous driving can face immediate custody, lengthy disqualification and serious professional consequences.
At LMP Legal, we represent private motorists, vocational drivers and fleet operators nationwide. Early specialist advice can influence charging decisions, preserve important evidence and protect your position from the outset.
What is causing serious injury by dangerous driving?
Dangerous driving requires the prosecution to prove that the standard of driving fell far below that expected of a competent and careful driver and that it would have been obvious that driving in that manner was dangerous.
The prosecution also needs to establish a causative link between the driving and the injuries sustained. Injuries do not need to be permanently life-changing to be regarded as serious. Fractures, significant lacerations and other substantial injuries may be sufficient.
What behaviours can lead to allegations?
Allegations commonly arise following excessive speed, aggressive driving, prolonged distraction, driving whilst impaired by alcohol or drugs, fatigue, disregard of traffic signals, driving with known defects or any driving that demonstrates a serious departure from accepted standards. The focus of the investigation is not only what happened, but whether the driving genuinely crossed the legal threshold from careless to dangerous driving.
Read more: Causing serious injury by careless driving
Penalties for causing serious injury by dangerous driving
A conviction for causing serious injury by dangerous driving can result in:
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Up to 5 years' imprisonment
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An unlimited fine
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A minimum 2-year driving disqualification
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A requirement to pass an extended driving test before regaining your licence
The court will assess both the seriousness of the driving and the severity of the injuries when determining sentence.
Aggravating factors, such as the involvement of a vulnerable road user (for example, a pedestrian, cyclist or motorcyclist) or driving for commercial purposes, can increase the seriousness of the offence and result in a more severe sentence.
What happens after an allegation of causing serious injury by dangerous driving?
Following a serious collision, police will usually secure evidence at the scene and obtain accounts from those involved. In the immediate aftermath, drivers may find themselves answering questions whilst in a state of shock and before they have had access to specialist legal representation. They may subsequently be invited to attend a voluntary interview under caution or, in some circumstances, be arrested whilst enquiries continue.
The investigation will focus on two key questions: whether the driving was dangerous and whether the driving caused those injuries. Charging decisions are often influenced by collision reconstruction evidence and medical reports.
Cases may proceed through the Magistrates' Court before being sent to the Crown Court where appropriate. Expert evidence is frequently relied upon by both the prosecution and defence.
Potential mitigation
Potential mitigation will depend on the circumstances of the case but may include:
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previous good character,
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genuine remorse,
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cooperation with investigators and;
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evidence that the incident arose from an isolated error of judgement rather than a sustained course of dangerous driving.
Where appropriate, detailed mitigation can assist the court in understanding the wider circumstances of the offence and the individual before it.
Statements made in the immediate aftermath of a collision whilst a driver is vulnerable, can impact subsequent investigations. Specialist representation allows evidence to be reviewed at an early stage and, where appropriate, representations to be made before charging decisions are finalised.

Case study
A private motorist contacted us via our CrashLaw24 app following a serious road traffic collision which left another driver with multiple fractures requiring surgery and a lengthy period of rehabilitation. Police were already in attendance and, given the nature of the injuries, the driver faced investigation for Causing Serious Injury by Dangerous Driving.
Speak to us in confidence
If you are facing a serious motoring offence or are under investigation following a road traffic incident, early advice is essential.
We act for privately funded clients and do not provide legal aid services. Fees are discussed openly at the outset, with clarity on scope and expectations. Our focus is on delivering high-quality, specialist representation for those who value expertise, discretion, and strategic judgement.
Contact us to see how we can help you.
The courts consider a range of injuries capable of meeting the threshold, including fractures, significant lacerations and other substantial physical injuries.
National guidance set by the Sentencing Council states that causing serious injury by dangerous driving attracts a minimum 26 weeks imprisonment. However, every case is assessed on its own facts.
A conviction carries a mandatory minimum disqualification of two years together with an extended driving test requirement.
In some cases, careful analysis of the evidence may result in a reduced charge of causing serious injury by careless driving to be considered.
Given the seriousness of the allegation and the technical evidence frequently involved, specialist representation is strongly recommended.
Motoring offence descriptions
Click each offence to learn more about what the offence is, what driving behaviours are included and the penalties for each offence.
For those facing motoring and transport-related offences, specialist knowledge of road traffic law, investigation processes, and sentencing guidelines is critical.
