After I'd qualified, I got a job working as a prosecutor for (the police.) ... I was prosecuting a straightforward drink drive case and thought I had it in the bag ... but I lost it on a tiny point ... I realised it was an area of the law where knowing an enormous amount of detail would be a great advantage. It's an area riddled with loopholes - you just have to know where to find them. When I left the police ... I developed a speciality in road traffic cases...
Asked if he feels bad earning money by getting dangerous drivers of the hook:
I'm not letting drivers "get away with it." We have a presumption of innocence in criminal law. And if the prosecution or the police haven't done their job properly by following the correct legal legal procedures, it is their responsibility if defendants are acquited on a technicality."
And so on.
The endless supplements which pad out the Telegraph every weekend don't seem to be available online or I'd just have linked to the whole article.