If one's honest about it, spending time in a car with children is pretty ghastly.

My dad was a diplomat and after living in America, where I was born, he was posted to Cairo.

In the 20 long, hungry years between my late teens and late 30s I bought in to virtually every new diet and/or exercise regime that hoved into view, particularly at this most vulnerable time for those of us prone to poor body image - a new year.

Sticking to a diet required me to have a permanently low self-esteem. But happily, I developed other skills beyond a fluctuating weight, eventually building up a different source of self-worth.

Look, I want what's good for everybody. I want to promote good state education for all. I want to raise standards for all kids, irrespective of race and class but why can't they all just do what I say when I know I'm right?