Is it safe for a baby to sleep in a sitting position?
Short answer: Babies should sleep lying flat on their back. The NHS says to take them out of the car seat once you arrive.
Here is the detail behind that answer, taken from current UK guidance from the NHS and the Lullaby Trust.
Things to check
- Check it fits your chassis.
- Check whether it is approved for overnight sleep. Only some are.
- Use the mattress supplied, with nothing added.
What the guidance says
- Always place your baby on their back to sleep, in the feet-to-foot position (feet at the bottom of the cot, Moses basket or pram).
- It is fine for a baby to fall asleep in a car seat while you travel, but take them out as soon as you arrive.
Related questions
What is a carrycot?
A lie-flat bassinet that clips onto a pushchair chassis.
Shop at Baby Kingdom
Check each product page for its exact dimensions, mattress size, age and weight limits and safety standards.
More advice
Pushchair vs stroller: which is better?Infant car seats buying guide for UK parentsHow long can you use a double pushchair?Carrycot vs travel cot: which is better?Pushchairs buying guide for UK parentsGuide to pushchair accessories: what to look forAll prams, pushchairs and travel systems advice →
Sources
- NHS: Sudden infant death syndrome (SIDS) (accessed 2026-10-21)
General information only, not medical advice. Always follow your product's instructions. If you are worried about your baby, contact your GP, health visitor or 111. In an emergency, call 999.