In the UK, the law requires all children travelling in vehicles to use the correct child restraint until they are either 135cm in height, or aged 12. After this, they must use an adult seat belt.

The law also states that rear-facing baby seats MUST NOT be used in a seat protected by a frontal airbag, unless the airbag has been deactivated manually or automatically. In addition, all car seats MUST conform to the latest European standard ECE R44.03, or R44.04.

Because it is the driver's legal responsibility to ensure that the child is correctly restrained, choosing the right car-seat - and making sure it fits correctly - is important.

Weight, not age, determines which car seat younger children should have. European regulations define eight groups of seat, each of which suits a specific weight-range.

This world wide standard fitting system provides a rigid connection between the child seat and the car.

Latches on the back of the car seat attach to fixed anchorage points in the car. This removes the risk of slack installation, helps reduce loads in a crash and reduces head movement forward.

Remember to check your car's compatibility with Isofix before you purchase a seat.

Infant carrier car seats - use from birth to 13kg/29lbs (about 15 months)

Portable and lightweight, these let you remove your baby from the car while they remain in their seat. Featuring:

Combination car seats - use from birth to 18kg/40lbs (about 4 years)

Use rear-facing seats from birth to 10kg/22lbs or 13kg/29lbs depending on the model, then use forward-facing seats when your baby can sit up unaided, from 9kg/20lbs to 18kg/40lbs - that's about 9 months to 4 years. Featuring:

Forward-facing car seats - use from 9kg/20lbs to 18kg/40lbs (about 9 months to 4 years)

Suitable for older children, these seats allow them to travel comfortably and safely in a forward-facing direction. Featuring:

High back booster seats with integral harnesses - use from 9kg/20lbs to 36kg/79lbs (about 9 months to 11 years)

These seats raise children to sit safely and comfortably in the car, while being secured by an adult safety belt. With extra height, children can also get a better view when travelling. Featuring:

High back boosters (without harnesses) and booster seats - from 15kg/33lbs to 36kg/70lbs (about 4 years to 11 years)

These seats raise older children to sit safely and comfortably in the car, while being secured by an adult safety belt. With extra height, children can also get a better view when travelling. Featuring:

The safest place for a child to sit in a car is in the centre rear, which is usually the furthest from any impact.

It is extremely important to fit a car seat correctly, otherwise it might not work. Sainsbury's car seats come with clear instructions on fitting, which should be followed. If in doubt, contact the manufacturer directly. Check that: