Here are some useful links that will help you find relevant information: 

Ofsted:  www.ofsted.gov.uk

E.Y.F.S: www.oxfordshire.gov.uk/cms/content/early-years-foundation-stage-1

O.C.C.:   www.oxfordshire.gov.uk

P.L.A:     www.pre-school.org.uk 

Charity Commission;  www.gov.uk/government/organisations/charity-commission