At 9.45am on Saturday, June 23 2007, I killed a man. A perfectly ordinary man, on a perfectly ordinary summer’s day. CCTV pictures show him entering the station, unremarkable among all the passengers going to the West End. He waited at the front of the platform until he could hear my train approaching, then he calmly stepped down on to the tracks and looked directly at me as he waited for the impact.

This made me cry, made me think, made me feel.

Go read it: Last year I killed a man