for the Child's Right to Play
The United Nations Convention on the Rights of the Child is the World's most adopted Treaty, the UK has signed it. Article 31 of the Convention states:
1. States Parties recognize the right of the child to rest and leisure, to engage in play and recreational activities appropriate to the age of the child and to participate freely in cultural life and the arts.
2. States Parties shall respect and promote the right of the child to participate fully in cultural and artistic life and shall encourage the provision of appropriate and equal opportunities for cultural, artistic, recreational and leisure activity.
The Convention in full: Read it here
Freedom to Play
The Right to be a Child
= The Right to Childhood
= The Right to Play