There is no legal minimum age for leaving a child home alone in the UK — but the law and the NSPCC set clear expectations. How to judge whether your child is ready.
Parents often ask what age a child can legally be left at home alone. UK law sets no minimum age, but it is an offence to leave a child alone if it puts them at risk. The decision rests on your child's maturity, the length of time, and whether they could cope in an emergency — not on their age alone.
The Children and Young Persons Act 1933 makes it an offence to leave a child unsupervised 'in a manner likely to cause unnecessary suffering or injury to health'. The NSPCC's guidance translates this into practical expectations: babies, toddlers and very young children should never be left alone; children under 12 are rarely mature enough to be left alone for long; and children under 16 should not be left alone overnight. Being left alone also changes what a child can access online without an adult nearby.
In your child's behaviour
On their device
Judge readiness, not just age
Build up gradually — start with short periods while you are nearby or contactable. Ask yourself whether your child feels comfortable, knows the household rules, and could handle a minor problem calmly before leaving them for longer.
Rehearse the emergency basics
Make sure your child knows how to call 999, how to reach you and a named back-up adult, your address, and simple rules: do not open the door to strangers, do not cook on the hob, and where the first-aid kit is.
Set the ground rules — including online
Agree what they can and cannot do while alone, including screen time and which sites, games, and chats are off-limits. Being home alone should not become unsupervised, unlimited internet time.
In immediate danger: call 999. For non-emergency police matters, call 101.
Concerned about a child but it's not an emergency? NSPCC helpline 0808 800 5000. Childline for young people 0800 1111.
This is practical educational content to support families. For case-specific concerns about a child's safety, contact the NSPCC helpline on 0808 800 5000 or your local safeguarding team.
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Last reviewed: 2026-07-27