Weight and Seats
0kg to 10kg Lie-flat or ‘lateral’ baby carrier, rear-facing baby carrier, or rear-facing baby seat using a harness
0kg to 13kg Rear-facing baby carrier or rear-facing baby seat using a harness
9kg to 18kg Rear- or forward-facing baby seat using a harness or safety shield
15kg to 25kg Rear- or forward-facing child car seat (high-backed booster seat or booster cushion) using a seat belt, harness or safety shield
22kg to 36kg Rear- or forward-facing child car seat (high-backed booster seat or booster cushion) using a seat belt, harness or safety shield
Every year thousands of children are killed or injured while travelling in cars in Great Britain. Many of these deaths and injuries would be prevented if children travelled in baby seats, child seats or booster seats that are suitable for their size and weight and are securely fitted.
The law requires all children travelling in the front or rear seat of any car, van or goods vehicle must use the correct child car seat until they are either 135 cm in height or 12 years old (which ever they reach first). After this they must use an adult seat belt. It is the driver's responsibility to ensure that children under the age of 14 years are restrained correctly in accordance with the law.
Seat belts on their own are less effective for children because they are primarily designed for adults. In a crash, a child may slide under an adult belt because the lap strap is too high over their abdomen, or the belt could cause serious injuries to the child.
Height-based seats are known as ‘i-Size’ seats. They must be rear-facing until your child is over 15 months old. Your child can use a forward-facing child car seat when they’re over 15 months old.
Which seats to use by law:
Only EU-approved weight-based child car seats can be used in the UK. These have a label showing a capital ‘E’ in a circle and ‘ECE R44’.