This is a very useful document to bookmark - Ofsted's Early Years Compliance handbook (upd May 2016) -

https://www.gov.uk/government/public...tion-by-ofsted

Pages 15-21 are helpful because they clarify when we need to make notifications to Ofsted and what they consider to be serious injuries (I am often asked for guidance on this question).

I wouldn't read it cover to cover but I think we'll be dipping in and out of it!