Safe Sleep Guide for Babies: Latest Cot, Bedding & Room-Sharing Rules (UK 2026)

On Finger Paint Family, discover the latest 2026 UK safe sleep guide for babies from The Lullaby Trust and NHS – essential advice on cots, bedding, room-sharing, and how to create a truly safe sleep environment for your baby.

As a parent in the UK, keeping your baby safe while they sleep is one of the most important things you can do. Following evidence-based safer sleep advice from The Lullaby Trust and the NHS has dramatically reduced cases of Sudden Infant Death Syndrome (SIDS) over the years. This guide brings together the latest UK guidelines (as of 2026) on room-sharing, cots, mattresses, and bedding.

Why Safe Sleep Matters

The safest place for your baby to sleep is on their back, in their own clear, flat sleep space, in the same room as you. These simple steps significantly lower the risk of SIDS and other sleep-related accidents. Always follow this advice for every sleep — day and night — especially in the first 6 months.

1. Room-Sharing: The Golden Rule for the First 6 Months

Babies should sleep in the same room as you (room-sharing), day and night, for at least the first 6 months.

• Place their cot, Moses basket, or crib right next to your bed so you can easily see and hear them.
• This reduces the risk of SIDS compared to sleeping in a separate room.
• You can briefly leave the room (e.g., to make a tea or use the toilet), but for most of the time they’re sleeping, stay close by.

After 6 months, many families move their baby to their own room, but you can continue room-sharing for longer if it suits your family. The risk of SIDS drops significantly after 6 months.

Important: Never put your baby to sleep in a separate room before 6 months, even for naps.

2. Choosing a Safe Cot or Sleep Space

Your baby needs their own separate sleep space — never share an adult bed as the default.

Recommended options:

• Cot or cot bed — Meets BS EN 716-1 safety standard (look for this label when buying new or second-hand).
• Moses basket or crib — Meets BS EN 1466.
• Bedside crib / co-sleeper — Must meet BS EN 1130:2019 (since 2020 updates).

Key safety checks for any cot:

• Slats no more than 6.5 cm apart (to prevent head trapping).
• Firm, stable structure with no loose parts or sharp edges.
• Mattress support is strong and level.
• Avoid very old cots (pre-1970s may have lead paint or wide gaps).

Feet-to-foot position: Always place your baby with their feet at the bottom (foot end) of the cot. Tuck bedding securely under the mattress so they can’t wriggle down and cover their head.

3. The Safest Mattress

Only use a firm, flat, waterproof mattress that fits snugly (no gaps around the edges).

• It must be completely flat with no raised or cushioned areas.
• Use a waterproof mattress protector/cover.
• Buy new if possible. If using a second-hand one, ensure it’s clean, dry, smoke-free, and in good condition (no stains, mould, or sagging).

Never use:

• Soft mattresses, memory foam, or ones with pillows/raised sides.
• Folded blankets or quilts under the baby for “comfort.”
• Car seats, bouncy chairs, or sofas as regular sleep spaces.

Travel cots have thinner mattresses, so they’re fine for short-term use but not ideal as a permanent sleep space.

4. Bedding: Keep It Simple and Light

Babies need very little bedding. The safest cot is a clear cot — only a mattress and lightweight bedding.

Recommended:

• Fitted cotton sheet + lightweight blankets (cellular or cotton) tucked in firmly below shoulder level.
• Or a well-fitted baby sleep sack/gro bag (follow tog rating for room temperature — no extra blankets needed).

Room temperature: Keep the bedroom between 16–20°C. Feel your baby’s tummy or the back of their neck to check if they’re too hot or cold (never use their hands/feet as a guide).

What to avoid in the cot:

• Pillows, duvets, quilts, or weighted blankets.
• Cot bumpers, pods, nests, positioners, or soft toys.
• Loose bedding that could cover the head.
• Anything that could cause overheating or restrict breathing.

Dress for the room: Use layers appropriate for the temperature. No hats indoors while sleeping.

5. Back Sleeping Position

Always place your baby on their back for every sleep (day and night) until they can roll both ways independently.

• If they roll onto their tummy or side once they’re able to roll back, that’s usually fine — but start them on their back.
• Never use wedges, rolled towels, or products to keep them in position.

6. Co-Sleeping / Bed-Sharing: When It’s Riskier

Many parents end up bed-sharing at some point, even if unplanned. The safest option is always a separate sleep space, but if you do bed-share:

Avoid completely if:

• You or your partner have drunk alcohol, taken drugs/medication that causes drowsiness, or smoke.
• Baby was premature (<37 weeks) or low birth weight (<2.5kg / 5.5lb).
• You’re on a sofa or armchair (much higher risk).

Safer bed-sharing tips (if no risk factors):

• Use a firm mattress.
• Keep pillows and heavy duvets away from baby.
• Ensure baby can’t fall out or get trapped.
• No other children or pets in the bed.

Quick Checklist for Every Sleep

• Back to sleep, feet to foot.
• Clear, flat, firm mattress in own cot/Moses basket.
• Same room as you (first 6+ months).
• Lightweight, tucked bedding or sleep sack.
• Room 16–20°C, no overheating.
• Smoke-free environment.

Additional Protective Factors

• Breastfeed if you can.
• Offer a dummy for sleep (if baby wants one).
• Keep up with NHS vaccinations.
• Never smoke around your baby (during pregnancy or after birth).

Final Thoughts

Safer sleep doesn’t have to be complicated — simple really is safest. Focus on the basics recommended by The Lullaby Trust and NHS rather than trendy products.

If you’re worried about your baby’s sleep or have specific needs (e.g., premature baby), speak to your health visitor, midwife, or GP. Resources like The Lullaby Trust website offer free booklets, videos, and a helpline.

Sources & Further Reading (all current as of 2026):

• The Lullaby Trust: www.lullabytrust.org.uk
• NHS: www.nhs.uk (SIDS and safer sleep pages)