asked Her Majesty's Government:

How much time children spend outdoors on average each week in the past 12 months in (a) young offender institutions; (b) secure training centres; and (c) local authority secure children's homes in England and Wales.[HL2673]

The information requested is not collected centrally, but young people under 18 in custody should spend an average of at least seven hours a week in the open air. For young offender institutions, this requirement is contained in Prison Service Order 4950 (“Care and Management of Young People”) and for secure training centres and secure children homes in the Youth Justice Board's national standards for youth justice services.