The NSPCC reported that it made 202 referrals to Welsh agencies, including police and children's services, in 2025 following contacts to its helpline about children being left home alone or unsupervised. Referrals are made when charity staff believe additional support or intervention is needed.
No Legal Age Limit but Risk Is an Offence
UK law does not stipulate a specific age for leaving a child alone, but it is an offence to leave a child alone if it places them at risk. The UK Government website notes: 'Parents can be prosecuted if they leave a child unsupervised in a manner likely to cause unnecessary suffering or injury to health.'
NSPCC Recommendations
The NSPCC recommends that children under 12 are 'rarely mature enough' to be left alone for extended periods and that children under 16 should not be left alone overnight. Babies, toddlers, and very young children should 'never' be left unattended. A charity spokesman said: 'There is no legal age limit for leaving children but the NSPCC recommends not leaving a child aged under 12 years old at home alone. Also, if a child has expressed worries about being left without a parent or carer, those should be taken seriously and respected.'
Individual Judgement for Parents
The NSPCC stresses that a 'one-size-fits-all' approach does not work, as every child develops differently. Their advice states: 'Learning to be independent is an important part of growing up. Between work, appointments, and other family commitments every parent may need to leave their child home alone at some point so it's good to have a plan in place. Every child is different so build up their independence at their pace – and check in with them to make sure they feel safe.'
Specific Age Groups
The NSPCC advises that infants and young children aged 0-3 should never be left alone, even for 15 minutes. Children aged 6-12 are usually too young to walk home from school alone, babysit, or cook without supervision. For secondary school-aged children, parents should discuss feelings about being left alone and ensure they know what to do in an emergency. The charity adds: 'Remember – you should never leave a child home alone if they don't feel ready or if you don't feel they're ready.'
