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Safe Sleep for Babies: The Guidance Every Sleep Plan Should Start With

Angelica Videla

Angelica Videla | Certified Baby Sleep Consultant · 5 min read · 19 Jul 2026

Quick Answer

Safe sleep means following current NHS and Lullaby Trust guidance: babies sleep on their back, on a firm flat mattress, in a clear cot — no pillows, duvets, bumpers or soft toys — in the same room as you for the first six months, in a smoke-free home, kept at a comfortable room temperature. These measures significantly reduce the risk of sudden infant death syndrome (SIDS). No sleep improvement is worth compromising on them — which is why every plan I create is built on this foundation first.

What are the safer sleep basics?

The core guidance is consistent and clear: always put your baby down to sleep on their back, for naps and nights, on a firm, flat, waterproof mattress in good condition. Keep the cot clear — no pillows, duvets, cot bumpers, soft toys or loose bedding for babies under 12 months. Your baby should sleep in the same room as you, day and night, for the first six months. Keep the room comfortably cool rather than warm, and keep your baby's environment completely smoke-free. For the full, current guidance, always check the NHS and Lullaby Trust directly — recommendations are updated as evidence evolves. (NHS safer sleep page ; Lullaby Trust )

Why does back sleeping matter so much?

Because it's the single change behind the dramatic fall in SIDS since the early 1990s. Babies placed on their backs breathe more safely during sleep, and the guidance holds for every sleep, not just nights — the risk is higher for babies unaccustomed to back sleeping who are then placed on their front. Once your baby can roll both ways by themselves, they can be left to find their own position — but you still always place them down on their back.

Does safe sleep change as my baby grows?

The principles hold through the first year, with a few milestones: swaddling (if used) stops as soon as your baby shows signs of rolling; room-sharing is recommended for at least the first six months; and the clear-cot rule holds until 12 months. Sleeping bags of the correct size and tog are the safest way to keep a baby warm without loose bedding. When in doubt about any product or setup, the Lullaby Trust's product guidance is the reference point — many products marketed for baby sleep don't meet safer sleep standards.

How does safe sleep fit into sleep consulting?

It comes first, always. Before any plan touches schedules or settling, I check that the sleep environment follows current NHS and Lullaby Trust guidance — and nothing I ever recommend trades safety for convenience or faster results. A safe setup is also, helpfully, a good sleep setup: a clear, firm, boringly consistent sleep space is exactly what helps babies settle well. If anything in your current setup doesn't match the guidance, fixing that is step one of any plan I write. (Sleep Support)

Always Check Current Guidance

Safe sleep recommendations are updated as new evidence emerges. For the most current guidance, visit the NHS website and the Lullaby Trust.

Written by Angelica Videla | Certified Baby Sleep Consultant

Angelica Videla is a certified baby and toddler sleep consultant based in London. All sleep plans follow current NHS and Lullaby Trust safer sleep guidance, with no exceptions.

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