Expressions of Interest Invited The London Borough of Hackney Children & Families Service is pleased to invite bids from suitably qualified organisations for the delivery of an Adventure Play Service to young people aged 6 to 15, up to 18 years old if they have a special educational need and/or disability. This procurement is reserved to providers based in the London Borough of Hackney. Hackney's adventure playgrounds provide free adventure play provisions for young people and their families. They are open 5 days a week all year round. During term time they are open after school and during the day in school holidays. The ...