Richard Teather: Everybody is outraged about offshore investment funds – because nobody understands what they are or what they do

I really must re-tune the alarm clock so that I am not woken in the morning by the BBC trying to drum up a bit of outrage about offshore investments.

Another load of personal data has been stolen from a law firm, and the BBC is trawling through it with prurient glee, trying to find some famous names that it can expose.