Question Author
Thanks, Mamyalynne. That just about clears it up. But, as with most legislation, there's a loophole. The section reads: The parent of every child of compulsory school age shall cause him to receive efficient full-time education suitable— (a)to his age, ability and aptitude, and (b)to any special educational needs he may have,
either by regular attendance at school or otherwise.
The loophole is "otherwise". A parent could argue that a foreign (or UK) holiday could be educational. Tricky, but not impossible, I should think. If I could have two best answers, the Corbyloon would get another vote. And, jim360, the IoW case you refer to was the one I was referring to in my original question. danny13k's link to the Sun article covers it.