[Osem]

Many more children are hidden from the authorities in unregistered schools across England than previously thought, Ofsted's chief inspector has said.

Sir Michael Wilshaw said a crackdown had found more than 100 suspected illegal schools. The majority were Islamic or Jewish, Oftsed said.

Seven warning notices have been issued to schools in London, Wolverhampton, Birmingham, Luton, and Stoke-on-Trent.

Any school offering 20 hours of lessons a week must be registered.

http://www.bbc.co.uk/news/education-36302054