Booster Car Seat Law

Here’s what you need to know

UK law states that children must use a child car seat until they’re 12 years old or 135cm/4ft 5in tall, whichever comes first. However, safety experts recommend that you use a child car seat for all children under 150cm/4ft 11in. This is the legal requirement in Ireland and some other European countries, such as Germany and France. For children weighing more than 36kg (5st 10lb) but under 150cm/4ft 11in, our advice is to go by height.

An appropriate child car seat is one that: conforms to the United Nations standard, ECE Regulation 44/03 or ECE 44/04 (this is marked on a label on the seat), or approved under R129 (also known as i-Size.) Is suitable for the child’s weight and size, or height (if buying an i-Size seat) is correctly fitted according to the manufacturer’s instructions. Only an EU-approved car seat can be used in the UK. Child car seats approved outside of the EU (the US for example) cannot be used in the UK. Avoid confusion about booster seat rules, read our guide on booster seats.


Use The Appropriate Safety Seat

Rear-Facing Seat

Rear-facing Seats from birth until age 2, or until your child reaches the upper weight limit of their rear-facing convertible seat, which will be around 35 pounds.

Forward-Facing Seat

Forward-facing Seats once your child reaches the upper weight or height limit of their rear-facing convertible seat. It is safest to keep your child in a froward-facing seat with a harness until they reach the maximum weight limit (40-65 pounds) or height restriction of their seat.

Belt-Positioning Booster Seat

Belt-Positioning Booster Seat once a child outgrows the upper weight or height limit of their forward-facing harness. Children should use belt-positioning booster seats until they are at least 150cm in height 4’11 inches and are between 6 and 12 years of age.

Lap & Shoulder Belt

Lap & Shoulder belts once the belt fits properly. ll children under age 13 should ride in the back seat!

Type Of Restraint Weight range Approx Age Range
Groups 0
Rearward-facing baby seat
For babies up to 10 kgs (22 lbs) Birth to 6-9 months
Groups 0+
Rearward-facing baby seat
For babies up to 13 kgs (29 lbs) Birth to 12-15 months
Groups 1
Forward-facing baby seat
9-18 kgs (20-40 lbs) 9 months to 4 years
Groups 2
Booster seat
15-25 kgs (33-55 lbs) 4 to 6 years
Groups 3
Booster cushion
22-36 kgs (48-79 lbs) 6 to 11/12 years

Further information

Child car seat laws in the UK

Find out when you have to use a baby or child car seat, and the penalties you face if you don't and are caught.

Read More

Car seat groups

Your child's weight is an important factor in choosing a car seat; here we break down the car seat weight groups to show you which you need.

Read More

Safety Certification

The PLUSH TUSH® is a “Universal” child restraint system. It has been approved by the VCA in accordance with regulation ECE R44/04. “Only suitable if the approved vehicles are fitted with 3 point retractor safety- belts, approved to UN/ECE Regulation No. 16 or other equivalent standards.”

VCA Approval Certificate

  • VCA Approved
  • BPA - Baby Products Association
  • TRL