Policy information sourced from the Hillingdon Local Plan: Part 1
R4 Proposals that Would Involve the Loss of Recreational Open Space
The local planning authority will not normally grant planning permission for proposals which involve the loss of land used (or where the last authorised use was) for recreational open space, (including publicly accessible open space and playing fields, private or school playing fields, private or public allotments), particularly if there is (or would be) a local deficiency in accessible open space.
For more information please see Appendix 5 of the Local Plan: Part 1