Flexi-Schooling does seem quite likely to result in a number of problems, such as keeping up with the curriculum; (teachers already have almost insurmountable difficulties managing fully attending, mixed-ability classes, so this comes as no surprise). I therefore wouldn't object to some of the criticisms of this particular arrangement, but full-time Home Ed came in for a few unjustified swipes along the way.
Shame Mike Fortune-Wood of Home Education UK didn't get more of a say. He comes over very well on radio and is, as a general rule, more than likely to talk complete sense.
It is possible to link to a recording of the programme here.