PPS 8 Open Space Sport and Outdoor Recreation·Page 39·B5(B)
NPFA standard children's playing space provision
A minimum of 0.8 hectares per 1000 people should be provided for designated children's play areas with facilities and designed environments, plus informal playing space within housing areas.
(B) Children's Playing Space: 0.8 hectares
(i) Designated areas for children and young people containing a range of facilities and an environment that has been designed to provide focussed opportunities for outdoor play; and
(ii) Casual or informal playing space within housing areas.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/PPS 8 - Open Space Sport and Outdoor Recreation.pdf