Thousands of children are being taught in unregistered schools across England, many more than previously thought, Ofsted’s chief inspector has said.
Sir Michael Wilshaw said a crackdown had found more than 100 suspected illegal schools – half of which were faith-based, Ofsted said.
Roughly a third of them were Islamic and a sixth either Christian or Jewish.
Seven warning notices have been issued to schools in London, Wolverhampton, Birmingham, Luton and Staffordshire.
Any school offering 20 hours of lessons a week must be registered.