Case Law: Regina v Secretary of State for Education ex parte Talmud Torah Machzikei Hadass; 12 Apr 1985

 For the record, a link to Woolf's ruling: 

Woolf J said: ‘education is ‘suitable’ if it primarily equips a child for life within the community of which he is a member, rather than the way of life in the country as a whole, as long as it does not foreclose the child’s options in later years to adopt some other form of life if he wishes to do so.’

Graham Badman mentioned it on page 6 of his report here. 

See also here and this other post from this blog here, though the EO link in that post no longer works.