Penalties
Child car seat fines in Great Britain
In Great Britain, a driver can receive a £100 fixed penalty for failing to secure a child as required. If the case goes to court, GOV.UK states that the maximum fine is £500. These offences currently carry no penalty points.
These rules apply in Great Britain. Northern Ireland has its own penalty, with points, covered further down.
Rules and figures checked on 10 September 2026.
How much is the fine for not using a child car seat?
Current Department for Transport material states a £100 fixed penalty in Great Britain. A prosecution can result in a fine of up to £500. The maximum is not the automatic amount in every case.
These offences do not currently add penalty points in Great Britain. A government consultation published in 2026 proposes changing that position, but a proposal is not the present law.
In practice there are three amounts to know. A police officer who stops the car can give the driver a fixed penalty of £100. If the driver refuses it or the case is sent to court, the magistrates can fine up to £500, and the court adds the victim surcharge on top. If the fixed penalty is simply ignored, it can be registered as a fine at one and a half times the penalty.
| Great Britain | Northern Ireland | |
|---|---|---|
| Fixed penalty | £100 | £60 |
| Penalty points | 0, with 3 proposed | 3 |
| Maximum court fine | £500 | £500 |
| Who is responsible for under 14s | The driver | The driver |
Sources: GOV.UK seat belt law, the Department for Transport 2026 penalties consultation and nidirect, checked 10 September 2026.
Department for Transport, Proposed changes to penalties for motoring offences (as of 10 September 2026); GOV.UK, Seat belts: the law (as of 10 September 2026); nidirect, Child car seats, restraints and seat belts (as of 10 September 2026); legislation.gov.uk, Road Traffic Offenders Act 1988, section 55: a notice not paid and no hearing requested (as of 10 September 2026)
Who gets fined if a child is not in the right seat?
The driver, not the child, is responsible for a passenger under 14. The child must use the correct approved restraint until reaching 135 cm or the 12th birthday, then wear an adult belt where one is fitted.
The Highway Code sets the responsibility out passenger by passenger. The driver answers for their own belt and for every passenger under 14, in the front and in the back. From 14, a passenger who does not wear an available belt commits the offence themselves, and the fixed penalty is theirs. That is why a car with a 13 year old and a 15 year old, both unbelted, can lead to a notice for the driver and a separate one for the older passenger.
| Passenger | Front seat | Rear seat | Responsible |
|---|---|---|---|
| Driver | Belt must be worn if fitted | Not applicable | Driver |
| Child under 3 | Correct child restraint must be used | Correct child restraint must be used | Driver |
| Child from 3 until 135 cm or the 12th birthday | Correct child restraint must be used | Correct child restraint where belts are fitted, with the listed exceptions | Driver |
| Child aged 12 or 13, or over 135 cm | Belt must be worn if available | Belt must be worn if available | Driver |
| Passenger aged 14 or over | Belt must be worn if available | Belt must be worn if available | Passenger |
Source: The Highway Code, rules 99 to 102, checked 10 September 2026.
Department for Transport, The Highway Code, rules 99 to 102 (as of 10 September 2026); GOV.UK, Seat belts: the law (as of 10 September 2026)
Which car seat does the law require at each age?
A child must normally use a child car seat until they are 12 or 135 cm tall, whichever comes first, and after that an adult belt. The seat can be chosen by height or by weight. Height based seats carry an E in a circle and R129 on the label, and must face the rear until the child is over 15 months old. Weight based seats carry ECE R44 and are grouped by weight, as below.
The usual ways to fall foul of the rules come from the gap between them and real journeys: a child who has outgrown a seat but is still under 135 cm, a seat borrowed for one trip that does not match the child's weight, or a rear facing seat in front of a live airbag. The label on the seat decides whether it is suitable, not the child's age alone.
| Group | Weight | Seat types |
|---|---|---|
| 0 | 0kg to 10kg | Lie flat carrier, rear facing carrier or rear facing seat with a harness |
| 0+ | 0kg to 13kg | Rear facing carrier or rear facing seat with a harness |
| 1 | 9kg to 18kg | Rear or forward facing seat with a harness or safety shield |
| 2 | 15kg to 25kg | Rear or forward facing seat, high backed booster or cushion, using the approved restraint |
| 3 | 22kg to 36kg | Rear or forward facing seat, high backed booster or cushion, using the approved restraint |
Source: GOV.UK, Child car seats: the law, checked 10 September 2026. R129 seats use the height range on their own label instead.
- A rear facing baby seat must not be fitted in a seat with an active frontal airbag; the airbag must be deactivated first.
- A child car seat must not be fitted on a side facing seat.
- A child seat needs a belt with a diagonal strap, unless it is designed for a lap belt or fitted with ISOFIX.
- Only approved seats count: R129 or ECE R44 on the label.
GOV.UK, Child car seats: the law (as of 10 September 2026); Department for Transport, The Highway Code, rules 99 to 102 (as of 10 September 2026)
When can a child legally travel without a car seat?
The exceptions are narrow and each has conditions. A driver who relies on one should be able to say which one and why it applied, because it is the answer to the allegation if the car is stopped.
| Situation | Child under 3 | Child aged 3 or over |
|---|---|---|
| Licensed taxi or minicab without the correct seat | May travel in a rear seat without a belt | Rear seat, adult belt |
| Unexpected, necessary journey over a short distance | Not allowed, except in a licensed taxi or minicab | Adult belt if the correct seat is not available |
| No room for a third child seat in the back | Must travel in the front, in the correct child seat | May sit in the back with an adult belt |
| Minibus without a child seat or adult belt | Must travel in a rear seat | Child seat if one is available, otherwise an adult belt |
| Coach | May travel without a seat or belt if none is available | May travel without a seat or belt if none is available |
| Vehicle made without seat belts, such as a classic car | Must not be carried at all | Back seat only, without a seat or belt |
| Van | Same rules as a car | Same rules as a car |
Sources: GOV.UK, When a child can travel without a car seat, and Seat belts: if your vehicle does not have seat belts, checked 10 September 2026.
Example
A grandparent collects a 5 year old from school when a parent is taken ill
- Child's age and height
- 5, 110 cm
- Child seat in the car
- None
- Journey
- Unplanned, 2 miles home
- Seat used
- Rear seat, adult belt
- The child is over 3, so the unexpected journey exception can apply.
- All three conditions must be met: the journey was unexpected, it was necessary, and it was over a short distance.
- The child travels in the back with the adult belt fastened.
This fits the exception. The same trip made every week, or a planned day out without a seat, would not, and the driver would face the fixed penalty.
GOV.UK, When a child can travel without a car seat (as of 10 September 2026); GOV.UK, Seat belts: the law, if your vehicle does not have seat belts (as of 10 September 2026)
What happens if the police stop you and how do you pay?
- The officer who stops the car checks each child's age, height and restraint, and asks about any exception you rely on.
- If the officer finds a child under 14 not restrained as the law requires, the driver can be given a fixed penalty notice for £100.
- The notice gives the period to pay or to ask for a court hearing. The Act sets it at 21 days from the notice unless the notice gives longer.
- Pay online through the Home Office Penalty Notice Portal with the notice and a debit or credit card, or by the other methods printed on the notice. Keep the confirmation.
- If you think an exception applied, do not pay. Ask for a hearing within the period and keep the evidence, such as a medical exemption certificate or proof of an emergency.
In Scotland the notice comes from Police Scotland, and GOV.UK links drivers with a Scottish fine to the Scottish Courts and Tribunals Service to pay it. In Northern Ireland the penalty is endorsable, so nidirect says it is paid within 21 days and the full driving licence is handed in at a police station within 7 days of the offence, for the Fixed Penalty Office to add the points. A driver from Great Britain stopped in Northern Ireland can still be given the penalty, and the Driver and Vehicle Agency then keeps a record for them.
Home Office, Penalty Notice Portal (as of 10 September 2026); legislation.gov.uk, Road Traffic Offenders Act 1988, section 52: the suspended enforcement period (as of 10 September 2026); GOV.UK, Speeding penalties (as of 7 September 2026); nidirect, Fixed Penalties for motoring offences (as of 10 September 2026)
Can you challenge a child car seat fine?
A fixed penalty is an offer, not a verdict. There is no council style appeal; the challenge is to decline the offer and have a court decide. That makes sense where an exception genuinely applied, the child was in fact over 135 cm or 12, or a doctor's exemption certificate covers the child. It rarely makes sense where the only point is that the journey was short or the child refused the seat, because the duty sits with the driver.
The cost of losing is the reason to think first. A court can fine up to £500, and for offences since 16 June 2022 it must add a victim surcharge of 40 per cent of the fine, usually with prosecution costs as well. The fixed penalty carries none of those.
Example
A driver turns down the fixed penalty and is convicted at the maximum
- Fixed penalty offered
- £100
- Court fine at the maximum
- £500
- Victim surcharge
- 40% of the fine
- Prosecution costs
- Set by the court
- The court fines £500, the most the law allows for this offence.
- The surcharge at 40 per cent of £500 is £200.
- Costs are added on top and vary by case.
At the maximum the fine and surcharge come to £700 before costs, against £100 for the fixed penalty. A lower fine carries a proportionately lower surcharge, but a surcharge comes with any court fine.
GOV.UK, Seat belts: the law (as of 10 September 2026); legislation.gov.uk, The Sentencing Act 2020 (Surcharge) (Amendment) Regulations 2022 (as of 16 June 2022)
Which common situations lead to a fine?
| Situation | Offence? | Who is responsible | Great Britain outcome |
|---|---|---|---|
| A 7 year old, 125 cm, in the adult belt on the school run | Yes, under 12 and under 135 cm | Driver | £100 fixed penalty, no points |
| A 13 year old unbelted in the back | Yes | Driver | £100 fixed penalty, no points |
| A 15 year old unbelted in the back | Yes | The passenger | Fixed penalty for the passenger |
| A 2 year old unrestrained in the back of a licensed minicab with no seat provided | No, the taxi exception applies | Not applicable | No penalty |
| A 10 year old, 140 cm, in the adult belt | No, over 135 cm | Not applicable | No penalty |
| A 4 year old in a classic car built without seat belts | No, if the child is in the back | Not applicable | No penalty; a child under 3 could not be carried |
Derived from GOV.UK child car seat and seat belt law and the Highway Code rules 99 to 102. The Northern Ireland outcome for the driver cases is the local fixed penalty with points.
GOV.UK, Child car seats: the law (as of 10 September 2026); GOV.UK, When a child can travel without a car seat (as of 10 September 2026); Department for Transport, The Highway Code, rules 99 to 102 (as of 10 September 2026)
Are penalty points coming for child seat offences?
They have been proposed, not introduced. The Department for Transport consultation on motoring penalties opened on 7 January 2026 and closed on 11 May 2026. It proposes making failure to wear a seat belt an endorsable offence with 3 points, and applies that to three groups: drivers without a belt, passengers without a belt, and drivers who fail to make sure a child is restrained. Today the Highway Code penalty table still lists seat belt offences with a fine and no points.
Northern Ireland already works that way. nidirect lists a £60 fixed penalty with 3 points for not using the right child restraint, with a £500 maximum in court. If the Great Britain proposal becomes law, a new driver would need to watch it closely, because 3 points is half of the 6 point limit in the first 2 years after passing.
Department for Transport, Proposed changes to penalties for motoring offences (as of 10 September 2026); Department for Transport, The Highway Code, Annex 5: penalties (as of 10 September 2026); nidirect, Child car seats, restraints and seat belts (as of 10 September 2026)
Common questions
- How much is the fixed penalty for a child restraint offence?
- Current Department for Transport material states £100 in Great Britain for failing to ensure a child is secured as required. The notice is given to the driver, because the driver is the person the law makes responsible for a passenger under 14. Paying it settles the matter without a court hearing. If it is neither paid nor contested within the period on the notice, the penalty plus one half can be registered as a fine, which turns £100 into £150. Northern Ireland uses a different figure, set out on this page.
- What is the maximum court fine?
- GOV.UK states that a driver in Great Britain can be fined up to £500 when a child under 14 is not in the correct car seat or wearing a seat belt. That is a ceiling for the magistrates, not the amount every case receives. A driver who turns down the fixed penalty and loses in court also pays the victim surcharge, which is 40 per cent of the fine, and usually prosecution costs. At the maximum fine the surcharge alone is £200, so court only makes sense where you have a real defence.
- Does the offence carry penalty points?
- Not in Great Britain under the law checked on 10 September 2026. The Department for Transport consultation that ran from 7 January 2026 to 11 May 2026 proposes 3 points for failing to ensure a child is restrained, alongside the same change for drivers and passengers who do not wear a belt. A proposal is not the law until regulations are made. Northern Ireland is already different: nidirect lists 3 penalty points with its fixed penalty for not using the right child restraint.
- Who gets the fine, the driver or the parent?
- The driver. The Highway Code table puts responsibility for every passenger under 14 on the driver, whether or not the driver is the child's parent. A grandparent, a childminder or a friend doing the school run is the person who receives the notice if the child is not in the right restraint. From 14, a passenger is responsible for wearing their own belt and commits the offence themselves. Licensed taxi and minicab drivers have a specific exception when they do not provide the correct seat, and the child then has to sit in the back.
- Can my child sit in the front seat?
- The law does not set a minimum age for the front seat. A child under 12 and shorter than 135 cm must use the correct child restraint wherever they sit, and a rear facing baby seat must not be fitted in front of an active frontal airbag. GOV.UK requires the airbag to be deactivated first. A child seat must not be fitted on a side facing seat, and a car seat can only be used with a diagonal belt unless it is designed for a lap belt or fitted with ISOFIX. Those fitting rules sit alongside the age and height rule rather than replacing it.
- Are backless booster cushions illegal now?
- No. Since 9 February 2017 manufacturers can only bring out new booster cushion models for children at least 125 cm tall and weighing at least 22 kg. That rule was about new products. The Department for Transport confirmed that existing approved group 2 cushions are not affected, so an older cushion used within the limits on its label is still a legal restraint. The penalty risk comes from using a seat outside its label, or no seat at all, for a child under 135 cm and under 12.
- Do the rules apply in a taxi, minicab or ride hailing car?
- There is an exception for a licensed taxi or minicab, which GOV.UK also calls a private hire vehicle, and a ride hailing car is licensed as one. If the driver does not provide the correct child seat, a child can travel without one, but only in a rear seat: a child under 3 can travel without a belt, and a child aged 3 or over must wear the adult belt. The exception only applies to licensed vehicles. A friend or relative giving a lift in their own car has no such exception.
- What if my child has a disability or a medical condition?
- The same rules apply, but GOV.UK says the child can use a disabled person's seat belt or a child restraint designed for their needs. If the child cannot use a restraint or a seat belt because of their condition, a doctor can issue an exemption certificate. Keep it in the car, because it is the evidence that answers the allegation if the car is stopped. Northern Ireland has the same medical exception, and nidirect describes it as a certificate saying a seat belt is not advisable on medical grounds. Without a certificate, the ordinary restraint rules apply to the child.
Related pages
- Child car seat law and seat checkerIn Great Britain, a child normally needs an approved child car seat until their 12th birthday or until they reach 135 cm, whichever happens first. The seat must match the child's height or weight and be fitted as its manufacturer directs.
- i-Size and R129 child car seatsGOV.UK identifies legal height based restraints by a capital E in a circle and R129 on the approval label. These seats are commonly called i-Size seats. They must remain rear facing until the child is over 15 months old.
- Rear facing child car seat lawA height based R129 seat must face the rear until the child is over 15 months old. A rear facing baby seat must never be placed in front of an active frontal airbag.
- Booster seat law by height and weightUnder ECE R44, group 2 covers 15 kg to 25 kg and group 3 covers 22 kg to 36 kg. Approved R129 boosters instead use the height range and any maximum weight printed on their label.
- Penalty pointsHow points work where an offence does carry them.
Sources
Each legal threshold and exception above comes from the linked government guidance.
- GOV.UK, Seat belts: the law (as of 10 September 2026)
- Department for Transport, The Highway Code, rules 99 to 102 (as of 10 September 2026)
- Department for Transport, Proposed changes to penalties for motoring offences (as of 10 September 2026)
- GOV.UK, Child car seats: the law (as of 10 September 2026)
- GOV.UK, When a child can travel without a car seat (as of 10 September 2026)
- Department for Transport, The Highway Code, Annex 5: penalties (as of 10 September 2026)
- Home Office, Penalty Notice Portal (as of 10 September 2026)
- legislation.gov.uk, Road Traffic Offenders Act 1988, section 52: the suspended enforcement period (as of 10 September 2026)
- legislation.gov.uk, Road Traffic Offenders Act 1988, section 55: a notice not paid and no hearing requested (as of 10 September 2026)
- legislation.gov.uk, The Sentencing Act 2020 (Surcharge) (Amendment) Regulations 2022 (as of 16 June 2022)
- nidirect, Child car seats, restraints and seat belts (as of 10 September 2026)
- nidirect, Fixed Penalties for motoring offences (as of 10 September 2026)
- GOV.UK, Seat belts: the law, if your vehicle does not have seat belts (as of 10 September 2026)
- GOV.UK, Speeding penalties (as of 7 September 2026)