In case you missed them, here are two news in brief items, reported back-to-back on last night's edition of Radio Four's The World Tonight programme without further comment.

Two employees of Network Rail - the company that maintains Britain's network of railway tracks - have been arrested on suspicion of manslaughter in connection with the Grayrigg rail crash in February, in which an 84 year old woman died.

Meanwhile, the Health and Safety Executive has decided not to bring a criminal prosecution against the management of Stoke Mandeville NHS trust, despite two outbreaks of superbug clostridium difficile between October 2003 and June 2005, which killed 33 people.

The message here is quite obvious. Only manual workers have to account for the consequences of their negligence. Wear a decent suit and - nine times out of ten, anyway - you'll get away with it.